./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:55:10,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:55:10,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:55:10,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:55:10,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:55:10,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:55:10,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:55:10,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:55:10,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:55:10,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:55:10,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:55:10,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:55:10,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:55:10,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:55:10,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:55:10,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:55:10,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:55:10,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:55:10,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:55:10,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:55:10,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:55:10,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:55:10,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:55:10,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:55:10,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:55:10,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:55:10,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:55:10,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:55:10,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:55:10,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:55:10,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:55:10,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:55:10,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:55:11,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:55:11,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:55:11,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:55:11,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:55:11,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:55:11,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:55:11,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:55:11,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:55:11,008 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:55:11,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:55:11,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:55:11,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:55:11,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:55:11,060 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:55:11,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:55:11,061 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:55:11,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:55:11,068 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:55:11,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:55:11,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:55:11,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:55:11,070 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:55:11,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:55:11,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:55:11,070 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:55:11,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:55:11,071 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:55:11,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:55:11,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:55:11,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:55:11,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:55:11,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:55:11,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:55:11,073 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:55:11,073 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:55:11,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:55:11,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:55:11,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:55:11,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:55:11,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:55:11,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:55:11,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:55:11,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:55:11,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:55:11,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:55:11,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:55:11,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:55:11,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:55:11,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:55:11,078 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2021-11-12 22:55:11,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:55:11,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:55:11,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:55:11,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:55:11,430 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:55:11,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-11-12 22:55:11,516 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/data/578d25e3c/77ac29e938fa4d4f8881e9ca70dfc71a/FLAGdae1d96e3 [2021-11-12 22:55:12,091 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:55:12,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/sv-benchmarks/c/weaver/test-easy10.wvr.c [2021-11-12 22:55:12,109 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/data/578d25e3c/77ac29e938fa4d4f8881e9ca70dfc71a/FLAGdae1d96e3 [2021-11-12 22:55:12,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/data/578d25e3c/77ac29e938fa4d4f8881e9ca70dfc71a [2021-11-12 22:55:12,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:55:12,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:55:12,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:55:12,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:55:12,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:55:12,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d340282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12, skipping insertion in model container [2021-11-12 22:55:12,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:55:12,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:55:12,725 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-11-12 22:55:12,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:55:12,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:55:12,777 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2021-11-12 22:55:12,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:55:12,793 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:55:12,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12 WrapperNode [2021-11-12 22:55:12,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:55:12,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:55:12,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:55:12,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:55:12,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:55:12,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:55:12,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:55:12,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:55:12,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:55:12,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:55:12,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:55:12,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:55:12,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (1/1) ... [2021-11-12 22:55:12,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:55:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:55:12,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:55:12,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19b74741-c125-403b-8059-8c00da142b41/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:55:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-12 22:55:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-12 22:55:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-12 22:55:12,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-12 22:55:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-12 22:55:12,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-12 22:55:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-12 22:55:12,989 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-12 22:55:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:55:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:55:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:55:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-12 22:55:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-12 22:55:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:55:12,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:55:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:55:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:55:12,993 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 22:55:13,576 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:55:13,579 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:55:13,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:55:13 BoogieIcfgContainer [2021-11-12 22:55:13,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:55:13,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:55:13,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:55:13,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:55:13,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:55:12" (1/3) ... [2021-11-12 22:55:13,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d294b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:55:13, skipping insertion in model container [2021-11-12 22:55:13,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:55:12" (2/3) ... [2021-11-12 22:55:13,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d294b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:55:13, skipping insertion in model container [2021-11-12 22:55:13,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:55:13" (3/3) ... [2021-11-12 22:55:13,595 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2021-11-12 22:55:13,600 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-12 22:55:13,601 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:55:13,601 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:55:13,601 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 22:55:13,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,668 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,668 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,669 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,669 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,669 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,669 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,670 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,671 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,671 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,672 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,673 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,673 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,673 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,674 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,674 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,674 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,675 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,676 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,676 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,676 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,676 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,677 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,677 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,677 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,686 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,687 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,687 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,687 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,688 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,689 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,689 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,690 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,692 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,693 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,693 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,693 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 22:55:13,704 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-12 22:55:13,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:55:13,783 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:55:13,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-12 22:55:13,805 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 22:55:13,819 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 138 transitions, 308 flow [2021-11-12 22:55:13,822 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 138 transitions, 308 flow [2021-11-12 22:55:13,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2021-11-12 22:55:13,929 INFO L129 PetriNetUnfolder]: 2/134 cut-off events. [2021-11-12 22:55:13,929 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-12 22:55:13,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2021-11-12 22:55:13,940 INFO L116 LiptonReduction]: Number of co-enabled transitions 1824 [2021-11-12 22:55:19,838 INFO L131 LiptonReduction]: Checked pairs total: 6505 [2021-11-12 22:55:19,838 INFO L133 LiptonReduction]: Total number of compositions: 109 [2021-11-12 22:55:19,847 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 38 transitions, 108 flow [2021-11-12 22:55:19,958 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1874 states, 1873 states have (on average 3.5371062466631074) internal successors, (6625), 1873 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 1874 states, 1873 states have (on average 3.5371062466631074) internal successors, (6625), 1873 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:20,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:20,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:20,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash -776616103, now seen corresponding path program 1 times [2021-11-12 22:55:20,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:20,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806012330] [2021-11-12 22:55:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:20,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:20,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:20,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806012330] [2021-11-12 22:55:20,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806012330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:20,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:20,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:55:20,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965460872] [2021-11-12 22:55:20,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:20,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:55:20,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:55:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:55:20,523 INFO L87 Difference]: Start difference. First operand has 1874 states, 1873 states have (on average 3.5371062466631074) internal successors, (6625), 1873 states have internal predecessors, (6625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:20,653 INFO L93 Difference]: Finished difference Result 1626 states and 5629 transitions. [2021-11-12 22:55:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:55:20,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:20,689 INFO L225 Difference]: With dead ends: 1626 [2021-11-12 22:55:20,689 INFO L226 Difference]: Without dead ends: 1626 [2021-11-12 22:55:20,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:55:20,693 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:20,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 52 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 78.17ms Time] [2021-11-12 22:55:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-11-12 22:55:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1626. [2021-11-12 22:55:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 3.464) internal successors, (5629), 1625 states have internal predecessors, (5629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 5629 transitions. [2021-11-12 22:55:20,862 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 5629 transitions. Word has length 33 [2021-11-12 22:55:20,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:20,864 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 5629 transitions. [2021-11-12 22:55:20,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 5629 transitions. [2021-11-12 22:55:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:20,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:20,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:20,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:55:20,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1416639079, now seen corresponding path program 2 times [2021-11-12 22:55:20,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:20,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311407250] [2021-11-12 22:55:20,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:20,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:21,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:21,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311407250] [2021-11-12 22:55:21,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311407250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:21,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:21,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:55:21,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043291676] [2021-11-12 22:55:21,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:21,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:55:21,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:55:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:55:21,121 INFO L87 Difference]: Start difference. First operand 1626 states and 5629 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:21,195 INFO L93 Difference]: Finished difference Result 1322 states and 4473 transitions. [2021-11-12 22:55:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:55:21,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:21,208 INFO L225 Difference]: With dead ends: 1322 [2021-11-12 22:55:21,209 INFO L226 Difference]: Without dead ends: 1322 [2021-11-12 22:55:21,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:55:21,211 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.26ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:21,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 7 Invalid, 54 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 50.26ms Time] [2021-11-12 22:55:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2021-11-12 22:55:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1322. [2021-11-12 22:55:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 3.3860711582134746) internal successors, (4473), 1321 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 4473 transitions. [2021-11-12 22:55:21,281 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 4473 transitions. Word has length 33 [2021-11-12 22:55:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:21,283 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 4473 transitions. [2021-11-12 22:55:21,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 4473 transitions. [2021-11-12 22:55:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:21,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:21,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:21,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:55:21,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:21,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash 788681867, now seen corresponding path program 3 times [2021-11-12 22:55:21,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:21,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290321681] [2021-11-12 22:55:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:21,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:22,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:22,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290321681] [2021-11-12 22:55:22,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290321681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:22,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:22,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:22,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182549989] [2021-11-12 22:55:22,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:22,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:22,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:22,879 INFO L87 Difference]: Start difference. First operand 1322 states and 4473 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:24,976 INFO L93 Difference]: Finished difference Result 2593 states and 7799 transitions. [2021-11-12 22:55:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:55:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:25,000 INFO L225 Difference]: With dead ends: 2593 [2021-11-12 22:55:25,000 INFO L226 Difference]: Without dead ends: 2582 [2021-11-12 22:55:25,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:55:25,002 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 232 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1229.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.34ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1417.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:25,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 53 Invalid, 1307 Unknown, 0 Unchecked, 12.34ms Time], IncrementalHoareTripleChecker [40 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1417.90ms Time] [2021-11-12 22:55:25,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-11-12 22:55:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1354. [2021-11-12 22:55:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3725055432372506) internal successors, (4563), 1353 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4563 transitions. [2021-11-12 22:55:25,076 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4563 transitions. Word has length 33 [2021-11-12 22:55:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:25,077 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4563 transitions. [2021-11-12 22:55:25,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4563 transitions. [2021-11-12 22:55:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:25,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:25,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:25,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:55:25,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash -817007539, now seen corresponding path program 4 times [2021-11-12 22:55:25,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:25,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143520191] [2021-11-12 22:55:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:25,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:26,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:26,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143520191] [2021-11-12 22:55:26,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143520191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:26,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:26,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:26,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551463994] [2021-11-12 22:55:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:26,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:26,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:26,465 INFO L87 Difference]: Start difference. First operand 1354 states and 4563 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:28,592 INFO L93 Difference]: Finished difference Result 2597 states and 7805 transitions. [2021-11-12 22:55:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:55:28,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:28,629 INFO L225 Difference]: With dead ends: 2597 [2021-11-12 22:55:28,629 INFO L226 Difference]: Without dead ends: 2580 [2021-11-12 22:55:28,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:55:28,631 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 236 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1262.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.75ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1459.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:28,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 57 Invalid, 1353 Unknown, 0 Unchecked, 10.75ms Time], IncrementalHoareTripleChecker [39 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1459.64ms Time] [2021-11-12 22:55:28,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-11-12 22:55:28,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1352. [2021-11-12 22:55:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 22:55:28,700 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 22:55:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:28,700 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 22:55:28,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 22:55:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:28,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:28,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:28,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 22:55:28,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 978172565, now seen corresponding path program 5 times [2021-11-12 22:55:28,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:28,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989429334] [2021-11-12 22:55:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:28,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:29,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:29,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989429334] [2021-11-12 22:55:29,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989429334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:29,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:29,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:29,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005785559] [2021-11-12 22:55:29,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:29,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:29,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:29,970 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:31,971 INFO L93 Difference]: Finished difference Result 2601 states and 7811 transitions. [2021-11-12 22:55:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:55:31,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:31,993 INFO L225 Difference]: With dead ends: 2601 [2021-11-12 22:55:31,993 INFO L226 Difference]: Without dead ends: 2578 [2021-11-12 22:55:31,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:55:31,994 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 243 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1165.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.61ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1339.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:31,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 47 Invalid, 1355 Unknown, 0 Unchecked, 8.61ms Time], IncrementalHoareTripleChecker [36 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 1339.01ms Time] [2021-11-12 22:55:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-11-12 22:55:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1350. [2021-11-12 22:55:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.375092661230541) internal successors, (4553), 1349 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4553 transitions. [2021-11-12 22:55:32,061 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4553 transitions. Word has length 33 [2021-11-12 22:55:32,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:32,061 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4553 transitions. [2021-11-12 22:55:32,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4553 transitions. [2021-11-12 22:55:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:32,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:32,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:32,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 22:55:32,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1074682005, now seen corresponding path program 6 times [2021-11-12 22:55:32,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:32,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821558273] [2021-11-12 22:55:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:32,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:33,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:33,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821558273] [2021-11-12 22:55:33,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821558273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:33,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:33,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:33,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740545711] [2021-11-12 22:55:33,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:33,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:33,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:33,135 INFO L87 Difference]: Start difference. First operand 1350 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:34,950 INFO L93 Difference]: Finished difference Result 2621 states and 7848 transitions. [2021-11-12 22:55:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:55:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:34,972 INFO L225 Difference]: With dead ends: 2621 [2021-11-12 22:55:34,972 INFO L226 Difference]: Without dead ends: 2610 [2021-11-12 22:55:34,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=399, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:55:34,974 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 247 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1019.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1174.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:34,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 52 Invalid, 1260 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [40 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1174.93ms Time] [2021-11-12 22:55:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2021-11-12 22:55:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 1354. [2021-11-12 22:55:35,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3725055432372506) internal successors, (4563), 1353 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4563 transitions. [2021-11-12 22:55:35,065 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4563 transitions. Word has length 33 [2021-11-12 22:55:35,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:35,067 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4563 transitions. [2021-11-12 22:55:35,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4563 transitions. [2021-11-12 22:55:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:35,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:35,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:35,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 22:55:35,075 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1609911807, now seen corresponding path program 7 times [2021-11-12 22:55:35,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:35,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525773913] [2021-11-12 22:55:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:35,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:36,184 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:36,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525773913] [2021-11-12 22:55:36,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525773913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:36,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:36,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:36,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82045378] [2021-11-12 22:55:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:36,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:36,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:36,187 INFO L87 Difference]: Start difference. First operand 1354 states and 4563 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:37,935 INFO L93 Difference]: Finished difference Result 2635 states and 7873 transitions. [2021-11-12 22:55:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:55:37,936 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:37,954 INFO L225 Difference]: With dead ends: 2635 [2021-11-12 22:55:37,954 INFO L226 Difference]: Without dead ends: 2616 [2021-11-12 22:55:37,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=220, Invalid=430, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:55:37,956 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 281 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 886.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.15ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1021.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:37,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 52 Invalid, 1236 Unknown, 0 Unchecked, 5.15ms Time], IncrementalHoareTripleChecker [41 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1021.42ms Time] [2021-11-12 22:55:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2021-11-12 22:55:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 1352. [2021-11-12 22:55:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 22:55:38,019 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 22:55:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:38,020 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 22:55:38,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:38,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 22:55:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:38,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:38,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:38,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 22:55:38,025 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:38,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:38,026 INFO L85 PathProgramCache]: Analyzing trace with hash -869304003, now seen corresponding path program 8 times [2021-11-12 22:55:38,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:38,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240052013] [2021-11-12 22:55:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:38,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:39,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:39,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240052013] [2021-11-12 22:55:39,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240052013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:39,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:39,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:39,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718665705] [2021-11-12 22:55:39,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:39,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:39,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:39,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:39,181 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:40,886 INFO L93 Difference]: Finished difference Result 2633 states and 7858 transitions. [2021-11-12 22:55:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:55:40,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:40,899 INFO L225 Difference]: With dead ends: 2633 [2021-11-12 22:55:40,900 INFO L226 Difference]: Without dead ends: 2622 [2021-11-12 22:55:40,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:55:40,901 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 257 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 928.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1102.54ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:40,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 59 Invalid, 1344 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [40 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1102.54ms Time] [2021-11-12 22:55:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-11-12 22:55:40,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1354. [2021-11-12 22:55:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.371027346637103) internal successors, (4561), 1353 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4561 transitions. [2021-11-12 22:55:40,962 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4561 transitions. Word has length 33 [2021-11-12 22:55:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:40,963 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4561 transitions. [2021-11-12 22:55:40,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4561 transitions. [2021-11-12 22:55:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:40,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:40,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:40,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 22:55:40,968 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1819973887, now seen corresponding path program 9 times [2021-11-12 22:55:40,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:40,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692763893] [2021-11-12 22:55:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:40,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:42,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:42,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692763893] [2021-11-12 22:55:42,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692763893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:42,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:42,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:42,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994792428] [2021-11-12 22:55:42,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:42,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:42,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:42,105 INFO L87 Difference]: Start difference. First operand 1354 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:43,750 INFO L93 Difference]: Finished difference Result 2627 states and 7855 transitions. [2021-11-12 22:55:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:55:43,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:43,763 INFO L225 Difference]: With dead ends: 2627 [2021-11-12 22:55:43,763 INFO L226 Difference]: Without dead ends: 2610 [2021-11-12 22:55:43,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:55:43,764 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 233 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 909.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.63ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1050.98ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:43,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 55 Invalid, 1324 Unknown, 0 Unchecked, 4.63ms Time], IncrementalHoareTripleChecker [40 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1050.98ms Time] [2021-11-12 22:55:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2021-11-12 22:55:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 1352. [2021-11-12 22:55:43,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 22:55:43,823 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 22:55:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:43,824 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 22:55:43,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 22:55:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:43,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:43,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:43,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 22:55:43,829 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash -921819523, now seen corresponding path program 10 times [2021-11-12 22:55:43,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:43,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951357604] [2021-11-12 22:55:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:43,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:44,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:44,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951357604] [2021-11-12 22:55:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951357604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:44,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:44,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245086074] [2021-11-12 22:55:44,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:44,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:44,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:44,814 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:46,401 INFO L93 Difference]: Finished difference Result 2633 states and 7871 transitions. [2021-11-12 22:55:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:55:46,402 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:46,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:46,411 INFO L225 Difference]: With dead ends: 2633 [2021-11-12 22:55:46,411 INFO L226 Difference]: Without dead ends: 2616 [2021-11-12 22:55:46,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:55:46,412 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 234 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 881.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1029.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:46,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 53 Invalid, 1282 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [39 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1029.19ms Time] [2021-11-12 22:55:46,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2021-11-12 22:55:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 1358. [2021-11-12 22:55:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.3655121591746497) internal successors, (4567), 1357 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4567 transitions. [2021-11-12 22:55:46,471 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4567 transitions. Word has length 33 [2021-11-12 22:55:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:46,471 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4567 transitions. [2021-11-12 22:55:46,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4567 transitions. [2021-11-12 22:55:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:46,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:46,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:46,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 22:55:46,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:46,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1232228565, now seen corresponding path program 11 times [2021-11-12 22:55:46,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:46,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818562903] [2021-11-12 22:55:46,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:46,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:47,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:47,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818562903] [2021-11-12 22:55:47,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818562903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:47,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:47,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:47,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101005779] [2021-11-12 22:55:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:47,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:47,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:47,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:47,422 INFO L87 Difference]: Start difference. First operand 1358 states and 4567 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:49,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:49,088 INFO L93 Difference]: Finished difference Result 2615 states and 7841 transitions. [2021-11-12 22:55:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:55:49,088 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:49,098 INFO L225 Difference]: With dead ends: 2615 [2021-11-12 22:55:49,098 INFO L226 Difference]: Without dead ends: 2592 [2021-11-12 22:55:49,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:55:49,100 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 208 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 925.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1070.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:49,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 54 Invalid, 1452 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [37 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1070.78ms Time] [2021-11-12 22:55:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2021-11-12 22:55:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 1350. [2021-11-12 22:55:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 22:55:49,156 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 22:55:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:49,157 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 22:55:49,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 22:55:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:49,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:49,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:49,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 22:55:49,162 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:49,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:49,162 INFO L85 PathProgramCache]: Analyzing trace with hash -62063233, now seen corresponding path program 12 times [2021-11-12 22:55:49,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:49,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071007486] [2021-11-12 22:55:49,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:49,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:50,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:50,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071007486] [2021-11-12 22:55:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071007486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:50,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:50,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:50,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851091099] [2021-11-12 22:55:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:50,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:50,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:50,079 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:51,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:51,538 INFO L93 Difference]: Finished difference Result 2651 states and 7903 transitions. [2021-11-12 22:55:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:55:51,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:51,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:51,549 INFO L225 Difference]: With dead ends: 2651 [2021-11-12 22:55:51,549 INFO L226 Difference]: Without dead ends: 2630 [2021-11-12 22:55:51,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:55:51,551 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 283 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 783.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 904.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:51,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 47 Invalid, 1227 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [39 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 904.85ms Time] [2021-11-12 22:55:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-11-12 22:55:51,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 1356. [2021-11-12 22:55:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.366789667896679) internal successors, (4562), 1355 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:51,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4562 transitions. [2021-11-12 22:55:51,613 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4562 transitions. Word has length 33 [2021-11-12 22:55:51,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:51,614 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4562 transitions. [2021-11-12 22:55:51,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4562 transitions. [2021-11-12 22:55:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:51,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:51,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:51,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 22:55:51,619 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:51,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:51,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1991268483, now seen corresponding path program 13 times [2021-11-12 22:55:51,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:51,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993776987] [2021-11-12 22:55:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:51,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:52,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:52,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993776987] [2021-11-12 22:55:52,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993776987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:52,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:52,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:52,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640032199] [2021-11-12 22:55:52,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:52,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:52,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:52,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:52,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:52,415 INFO L87 Difference]: Start difference. First operand 1356 states and 4562 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:54,201 INFO L93 Difference]: Finished difference Result 2661 states and 7922 transitions. [2021-11-12 22:55:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:55:54,201 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:54,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:54,208 INFO L225 Difference]: With dead ends: 2661 [2021-11-12 22:55:54,208 INFO L226 Difference]: Without dead ends: 2644 [2021-11-12 22:55:54,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:55:54,210 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 235 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 954.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1102.72ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:54,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 63 Invalid, 1444 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [39 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 1102.72ms Time] [2021-11-12 22:55:54,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-11-12 22:55:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1362. [2021-11-12 22:55:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.360029390154298) internal successors, (4573), 1361 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4573 transitions. [2021-11-12 22:55:54,288 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4573 transitions. Word has length 33 [2021-11-12 22:55:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:54,289 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 4573 transitions. [2021-11-12 22:55:54,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4573 transitions. [2021-11-12 22:55:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:54,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:54,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:54,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 22:55:54,294 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1437155883, now seen corresponding path program 14 times [2021-11-12 22:55:54,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:54,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787014286] [2021-11-12 22:55:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:54,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:55,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:55,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787014286] [2021-11-12 22:55:55,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787014286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:55,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:55,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:55,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595021592] [2021-11-12 22:55:55,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:55,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:55,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:55,247 INFO L87 Difference]: Start difference. First operand 1362 states and 4573 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:56,943 INFO L93 Difference]: Finished difference Result 2635 states and 7877 transitions. [2021-11-12 22:55:56,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:55:56,944 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:56,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:56,951 INFO L225 Difference]: With dead ends: 2635 [2021-11-12 22:55:56,951 INFO L226 Difference]: Without dead ends: 2606 [2021-11-12 22:55:56,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:55:56,952 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 231 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 906.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.01ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1046.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:56,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 48 Invalid, 1252 Unknown, 0 Unchecked, 5.01ms Time], IncrementalHoareTripleChecker [38 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1046.02ms Time] [2021-11-12 22:55:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-11-12 22:55:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1348. [2021-11-12 22:55:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.374907201187825) internal successors, (4546), 1347 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4546 transitions. [2021-11-12 22:55:57,010 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4546 transitions. Word has length 33 [2021-11-12 22:55:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:57,011 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4546 transitions. [2021-11-12 22:55:57,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4546 transitions. [2021-11-12 22:55:57,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:57,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:57,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:57,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-12 22:55:57,016 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2003980939, now seen corresponding path program 15 times [2021-11-12 22:55:57,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:57,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458826512] [2021-11-12 22:55:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:57,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:55:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:57,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:55:57,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458826512] [2021-11-12 22:55:57,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458826512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:55:57,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:55:57,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:55:57,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430474153] [2021-11-12 22:55:57,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:55:57,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:55:57,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:55:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:55:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:55:57,792 INFO L87 Difference]: Start difference. First operand 1348 states and 4546 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:55:59,146 INFO L93 Difference]: Finished difference Result 2565 states and 7738 transitions. [2021-11-12 22:55:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:55:59,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:55:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:55:59,152 INFO L225 Difference]: With dead ends: 2565 [2021-11-12 22:55:59,152 INFO L226 Difference]: Without dead ends: 2554 [2021-11-12 22:55:59,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:55:59,153 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 236 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 776.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 902.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:55:59,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 53 Invalid, 1323 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [35 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 902.10ms Time] [2021-11-12 22:55:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-11-12 22:55:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1354. [2021-11-12 22:55:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.371027346637103) internal successors, (4561), 1353 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4561 transitions. [2021-11-12 22:55:59,221 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4561 transitions. Word has length 33 [2021-11-12 22:55:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:55:59,221 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4561 transitions. [2021-11-12 22:55:59,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:55:59,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4561 transitions. [2021-11-12 22:55:59,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:55:59,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:55:59,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:55:59,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-12 22:55:59,228 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:55:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:55:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1755756555, now seen corresponding path program 16 times [2021-11-12 22:55:59,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:55:59,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573807790] [2021-11-12 22:55:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:55:59,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:55:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:00,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:00,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573807790] [2021-11-12 22:56:00,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573807790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:00,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:00,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:00,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982780127] [2021-11-12 22:56:00,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:00,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:00,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:00,312 INFO L87 Difference]: Start difference. First operand 1354 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:01,760 INFO L93 Difference]: Finished difference Result 2571 states and 7748 transitions. [2021-11-12 22:56:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:01,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:01,765 INFO L225 Difference]: With dead ends: 2571 [2021-11-12 22:56:01,765 INFO L226 Difference]: Without dead ends: 2552 [2021-11-12 22:56:01,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:01,766 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 221 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 844.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.97ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 978.67ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:01,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 58 Invalid, 1263 Unknown, 0 Unchecked, 4.97ms Time], IncrementalHoareTripleChecker [36 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 978.67ms Time] [2021-11-12 22:56:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-11-12 22:56:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1352. [2021-11-12 22:56:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 22:56:01,843 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 22:56:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:01,843 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 22:56:01,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 22:56:01,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:01,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:01,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:01,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-12 22:56:01,849 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1095507701, now seen corresponding path program 17 times [2021-11-12 22:56:01,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:01,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501204838] [2021-11-12 22:56:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:01,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:02,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:02,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501204838] [2021-11-12 22:56:02,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501204838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:02,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:02,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:02,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677340212] [2021-11-12 22:56:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:02,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:02,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:02,917 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:04,387 INFO L93 Difference]: Finished difference Result 2577 states and 7758 transitions. [2021-11-12 22:56:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:04,399 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:04,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:04,404 INFO L225 Difference]: With dead ends: 2577 [2021-11-12 22:56:04,404 INFO L226 Difference]: Without dead ends: 2550 [2021-11-12 22:56:04,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:04,405 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 228 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 836.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 969.86ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:04,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 54 Invalid, 1328 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [34 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 969.86ms Time] [2021-11-12 22:56:04,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-12 22:56:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1350. [2021-11-12 22:56:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 22:56:04,459 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 22:56:04,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:04,459 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 22:56:04,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 22:56:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:04,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:04,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:04,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-12 22:56:04,464 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1849543421, now seen corresponding path program 18 times [2021-11-12 22:56:04,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:04,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657154120] [2021-11-12 22:56:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:04,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:05,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:05,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657154120] [2021-11-12 22:56:05,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657154120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:05,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:05,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:05,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867860602] [2021-11-12 22:56:05,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:05,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:05,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:05,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:05,448 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:06,908 INFO L93 Difference]: Finished difference Result 2605 states and 7795 transitions. [2021-11-12 22:56:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:06,913 INFO L225 Difference]: With dead ends: 2605 [2021-11-12 22:56:06,913 INFO L226 Difference]: Without dead ends: 2594 [2021-11-12 22:56:06,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:06,914 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 277 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 867.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.96ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 995.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:06,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 54 Invalid, 1253 Unknown, 0 Unchecked, 5.96ms Time], IncrementalHoareTripleChecker [38 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 995.42ms Time] [2021-11-12 22:56:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2021-11-12 22:56:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 1354. [2021-11-12 22:56:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.371027346637103) internal successors, (4561), 1353 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4561 transitions. [2021-11-12 22:56:06,964 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4561 transitions. Word has length 33 [2021-11-12 22:56:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:06,964 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4561 transitions. [2021-11-12 22:56:06,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:06,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4561 transitions. [2021-11-12 22:56:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:06,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:06,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:06,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-12 22:56:06,970 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:06,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1910194073, now seen corresponding path program 19 times [2021-11-12 22:56:06,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:06,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733269480] [2021-11-12 22:56:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:06,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:07,786 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:07,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733269480] [2021-11-12 22:56:07,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733269480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:07,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:07,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:07,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466466253] [2021-11-12 22:56:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:07,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:07,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:07,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:07,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:07,788 INFO L87 Difference]: Start difference. First operand 1354 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:09,255 INFO L93 Difference]: Finished difference Result 2611 states and 7805 transitions. [2021-11-12 22:56:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:09,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:09,260 INFO L225 Difference]: With dead ends: 2611 [2021-11-12 22:56:09,260 INFO L226 Difference]: Without dead ends: 2592 [2021-11-12 22:56:09,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:09,261 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 263 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 830.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 958.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:09,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 54 Invalid, 1273 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [39 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 958.38ms Time] [2021-11-12 22:56:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2021-11-12 22:56:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 1352. [2021-11-12 22:56:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 22:56:09,305 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 22:56:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:09,305 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 22:56:09,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 22:56:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:09,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:09,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:09,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-12 22:56:09,310 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -94442587, now seen corresponding path program 20 times [2021-11-12 22:56:09,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:09,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916373111] [2021-11-12 22:56:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:09,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:10,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:10,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916373111] [2021-11-12 22:56:10,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916373111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:10,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:10,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:10,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240484350] [2021-11-12 22:56:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:10,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:10,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:10,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:10,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:10,055 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:11,500 INFO L93 Difference]: Finished difference Result 2583 states and 7761 transitions. [2021-11-12 22:56:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:56:11,500 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:11,505 INFO L225 Difference]: With dead ends: 2583 [2021-11-12 22:56:11,505 INFO L226 Difference]: Without dead ends: 2572 [2021-11-12 22:56:11,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:11,506 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 260 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 828.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 957.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:11,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 45 Invalid, 1315 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [38 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 957.65ms Time] [2021-11-12 22:56:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-11-12 22:56:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1354. [2021-11-12 22:56:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.369549150036955) internal successors, (4559), 1353 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4559 transitions. [2021-11-12 22:56:11,546 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4559 transitions. Word has length 33 [2021-11-12 22:56:11,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:11,546 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4559 transitions. [2021-11-12 22:56:11,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4559 transitions. [2021-11-12 22:56:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:11,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:11,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:11,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-12 22:56:11,551 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1700131993, now seen corresponding path program 21 times [2021-11-12 22:56:11,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:11,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995381143] [2021-11-12 22:56:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:11,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:12,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:12,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995381143] [2021-11-12 22:56:12,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995381143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:12,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:12,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:12,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095889785] [2021-11-12 22:56:12,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:12,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:12,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:12,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:12,526 INFO L87 Difference]: Start difference. First operand 1354 states and 4559 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:14,024 INFO L93 Difference]: Finished difference Result 2577 states and 7758 transitions. [2021-11-12 22:56:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:14,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:14,029 INFO L225 Difference]: With dead ends: 2577 [2021-11-12 22:56:14,029 INFO L226 Difference]: Without dead ends: 2560 [2021-11-12 22:56:14,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:14,030 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 219 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 845.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 977.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:14,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 50 Invalid, 1364 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [37 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 977.60ms Time] [2021-11-12 22:56:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-11-12 22:56:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1352. [2021-11-12 22:56:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3708364174685417) internal successors, (4554), 1351 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4554 transitions. [2021-11-12 22:56:14,071 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4554 transitions. Word has length 33 [2021-11-12 22:56:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:14,072 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4554 transitions. [2021-11-12 22:56:14,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4554 transitions. [2021-11-12 22:56:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:14,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:14,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:14,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-12 22:56:14,077 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash -146958107, now seen corresponding path program 22 times [2021-11-12 22:56:14,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:14,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019687561] [2021-11-12 22:56:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:14,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:14,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:14,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019687561] [2021-11-12 22:56:14,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019687561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:14,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:14,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:14,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766431656] [2021-11-12 22:56:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:14,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:14,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:14,990 INFO L87 Difference]: Start difference. First operand 1352 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:16,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:16,491 INFO L93 Difference]: Finished difference Result 2599 states and 7794 transitions. [2021-11-12 22:56:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:16,491 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:16,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:16,495 INFO L225 Difference]: With dead ends: 2599 [2021-11-12 22:56:16,496 INFO L226 Difference]: Without dead ends: 2582 [2021-11-12 22:56:16,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:16,497 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 235 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 882.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1018.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:16,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 54 Invalid, 1337 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [38 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1018.87ms Time] [2021-11-12 22:56:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-11-12 22:56:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1358. [2021-11-12 22:56:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.3640383198231394) internal successors, (4565), 1357 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4565 transitions. [2021-11-12 22:56:16,541 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4565 transitions. Word has length 33 [2021-11-12 22:56:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:16,541 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4565 transitions. [2021-11-12 22:56:16,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4565 transitions. [2021-11-12 22:56:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:16,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:16,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:16,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-12 22:56:16,546 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2007089981, now seen corresponding path program 23 times [2021-11-12 22:56:16,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:16,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346305097] [2021-11-12 22:56:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:16,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:17,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:17,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346305097] [2021-11-12 22:56:17,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346305097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:17,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:17,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:17,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504514904] [2021-11-12 22:56:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:17,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:17,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:17,465 INFO L87 Difference]: Start difference. First operand 1358 states and 4565 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:18,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:18,770 INFO L93 Difference]: Finished difference Result 2581 states and 7764 transitions. [2021-11-12 22:56:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:18,775 INFO L225 Difference]: With dead ends: 2581 [2021-11-12 22:56:18,775 INFO L226 Difference]: Without dead ends: 2558 [2021-11-12 22:56:18,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:18,776 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 232 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 724.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 840.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:18,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 40 Invalid, 1220 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [37 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 840.61ms Time] [2021-11-12 22:56:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-11-12 22:56:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1350. [2021-11-12 22:56:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 22:56:18,814 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 22:56:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:18,814 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 22:56:18,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 22:56:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:18,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:18,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:18,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-12 22:56:18,819 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2025199693, now seen corresponding path program 24 times [2021-11-12 22:56:18,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:18,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682588590] [2021-11-12 22:56:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:18,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:19,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:19,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682588590] [2021-11-12 22:56:19,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682588590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:19,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:19,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:19,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656362088] [2021-11-12 22:56:19,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:19,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:19,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:19,744 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:21,128 INFO L93 Difference]: Finished difference Result 2599 states and 7793 transitions. [2021-11-12 22:56:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:21,129 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:21,135 INFO L225 Difference]: With dead ends: 2599 [2021-11-12 22:56:21,135 INFO L226 Difference]: Without dead ends: 2574 [2021-11-12 22:56:21,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:21,136 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 239 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 771.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.11ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 890.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:21,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 44 Invalid, 1205 Unknown, 0 Unchecked, 4.11ms Time], IncrementalHoareTripleChecker [37 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 890.82ms Time] [2021-11-12 22:56:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2021-11-12 22:56:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1356. [2021-11-12 22:56:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3653136531365315) internal successors, (4560), 1355 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4560 transitions. [2021-11-12 22:56:21,174 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4560 transitions. Word has length 33 [2021-11-12 22:56:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:21,175 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4560 transitions. [2021-11-12 22:56:21,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4560 transitions. [2021-11-12 22:56:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:21,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:21,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:21,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-12 22:56:21,179 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:21,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:21,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1252252021, now seen corresponding path program 25 times [2021-11-12 22:56:21,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:21,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696375048] [2021-11-12 22:56:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:21,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:22,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:22,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696375048] [2021-11-12 22:56:22,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696375048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:22,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:22,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:22,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639863254] [2021-11-12 22:56:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:22,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:22,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:22,003 INFO L87 Difference]: Start difference. First operand 1356 states and 4560 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:23,544 INFO L93 Difference]: Finished difference Result 2589 states and 7768 transitions. [2021-11-12 22:56:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:23,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:23,551 INFO L225 Difference]: With dead ends: 2589 [2021-11-12 22:56:23,551 INFO L226 Difference]: Without dead ends: 2572 [2021-11-12 22:56:23,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:23,552 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 249 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 809.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.33ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 931.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:23,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 43 Invalid, 1192 Unknown, 0 Unchecked, 4.33ms Time], IncrementalHoareTripleChecker [36 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 931.90ms Time] [2021-11-12 22:56:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-11-12 22:56:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1362. [2021-11-12 22:56:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.358559882439383) internal successors, (4571), 1361 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4571 transitions. [2021-11-12 22:56:23,587 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4571 transitions. Word has length 33 [2021-11-12 22:56:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:23,588 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 4571 transitions. [2021-11-12 22:56:23,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4571 transitions. [2021-11-12 22:56:23,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:23,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:23,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:23,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-12 22:56:23,591 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:23,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash 756896051, now seen corresponding path program 26 times [2021-11-12 22:56:23,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:23,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001334192] [2021-11-12 22:56:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:23,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:24,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:24,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001334192] [2021-11-12 22:56:24,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001334192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:24,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:24,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:24,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795182027] [2021-11-12 22:56:24,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:24,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:24,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:24,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:24,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:24,382 INFO L87 Difference]: Start difference. First operand 1362 states and 4571 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:25,697 INFO L93 Difference]: Finished difference Result 2571 states and 7738 transitions. [2021-11-12 22:56:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:25,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:25,702 INFO L225 Difference]: With dead ends: 2571 [2021-11-12 22:56:25,703 INFO L226 Difference]: Without dead ends: 2542 [2021-11-12 22:56:25,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:25,703 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 229 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 702.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.72ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 816.97ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:25,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 39 Invalid, 1196 Unknown, 0 Unchecked, 3.72ms Time], IncrementalHoareTripleChecker [36 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 816.97ms Time] [2021-11-12 22:56:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-11-12 22:56:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1348. [2021-11-12 22:56:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3734224201930214) internal successors, (4544), 1347 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4544 transitions. [2021-11-12 22:56:25,769 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4544 transitions. Word has length 33 [2021-11-12 22:56:25,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:25,769 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4544 transitions. [2021-11-12 22:56:25,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4544 transitions. [2021-11-12 22:56:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:25,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:25,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:25,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-12 22:56:25,772 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:25,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1218074347, now seen corresponding path program 27 times [2021-11-12 22:56:25,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:25,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985663746] [2021-11-12 22:56:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:25,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:26,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:26,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985663746] [2021-11-12 22:56:26,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985663746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:26,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:26,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:26,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275140148] [2021-11-12 22:56:26,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:26,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:26,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:26,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:26,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:26,692 INFO L87 Difference]: Start difference. First operand 1348 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:28,000 INFO L93 Difference]: Finished difference Result 2605 states and 7823 transitions. [2021-11-12 22:56:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:28,001 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:28,005 INFO L225 Difference]: With dead ends: 2605 [2021-11-12 22:56:28,005 INFO L226 Difference]: Without dead ends: 2584 [2021-11-12 22:56:28,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:28,006 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 207 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 741.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 860.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:28,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 44 Invalid, 1198 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [32 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 860.77ms Time] [2021-11-12 22:56:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2021-11-12 22:56:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1360. [2021-11-12 22:56:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3642384105960264) internal successors, (4572), 1359 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4572 transitions. [2021-11-12 22:56:28,079 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4572 transitions. Word has length 33 [2021-11-12 22:56:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:28,079 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4572 transitions. [2021-11-12 22:56:28,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4572 transitions. [2021-11-12 22:56:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:28,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:28,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:28,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-12 22:56:28,084 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:28,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash 867586671, now seen corresponding path program 28 times [2021-11-12 22:56:28,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:28,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382981479] [2021-11-12 22:56:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:28,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:29,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:29,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382981479] [2021-11-12 22:56:29,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382981479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:29,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:29,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:29,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647756224] [2021-11-12 22:56:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:29,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:29,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:29,119 INFO L87 Difference]: Start difference. First operand 1360 states and 4572 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:30,489 INFO L93 Difference]: Finished difference Result 2623 states and 7847 transitions. [2021-11-12 22:56:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:30,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:30,493 INFO L225 Difference]: With dead ends: 2623 [2021-11-12 22:56:30,493 INFO L226 Difference]: Without dead ends: 2606 [2021-11-12 22:56:30,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:30,494 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 222 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 802.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 925.34ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:30,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 48 Invalid, 1250 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [35 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 925.34ms Time] [2021-11-12 22:56:30,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-11-12 22:56:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1366. [2021-11-12 22:56:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.3575091575091576) internal successors, (4583), 1365 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4583 transitions. [2021-11-12 22:56:30,529 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4583 transitions. Word has length 33 [2021-11-12 22:56:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:30,529 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 4583 transitions. [2021-11-12 22:56:30,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4583 transitions. [2021-11-12 22:56:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:30,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:30,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:30,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-12 22:56:30,532 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1421699271, now seen corresponding path program 29 times [2021-11-12 22:56:30,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:30,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569159109] [2021-11-12 22:56:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:30,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:31,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:31,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:31,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569159109] [2021-11-12 22:56:31,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569159109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:31,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:31,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:31,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382330819] [2021-11-12 22:56:31,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:31,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:31,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:31,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:31,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:31,562 INFO L87 Difference]: Start difference. First operand 1366 states and 4583 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:33,157 INFO L93 Difference]: Finished difference Result 2605 states and 7817 transitions. [2021-11-12 22:56:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:33,157 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:33,161 INFO L225 Difference]: With dead ends: 2605 [2021-11-12 22:56:33,161 INFO L226 Difference]: Without dead ends: 2578 [2021-11-12 22:56:33,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:33,162 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 218 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 958.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1096.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:33,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 42 Invalid, 1213 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [35 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1096.87ms Time] [2021-11-12 22:56:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-11-12 22:56:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1354. [2021-11-12 22:56:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3665927568366594) internal successors, (4555), 1353 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4555 transitions. [2021-11-12 22:56:33,208 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4555 transitions. Word has length 33 [2021-11-12 22:56:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:33,208 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4555 transitions. [2021-11-12 22:56:33,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4555 transitions. [2021-11-12 22:56:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:33,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:33,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:33,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-12 22:56:33,213 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash -303658449, now seen corresponding path program 30 times [2021-11-12 22:56:33,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:33,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928534765] [2021-11-12 22:56:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:33,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:34,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:34,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928534765] [2021-11-12 22:56:34,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928534765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:34,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:34,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:34,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902219268] [2021-11-12 22:56:34,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:34,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:34,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:34,299 INFO L87 Difference]: Start difference. First operand 1354 states and 4555 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:35,911 INFO L93 Difference]: Finished difference Result 2595 states and 7793 transitions. [2021-11-12 22:56:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:35,911 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:35,916 INFO L225 Difference]: With dead ends: 2595 [2021-11-12 22:56:35,916 INFO L226 Difference]: Without dead ends: 2570 [2021-11-12 22:56:35,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:35,917 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 237 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 972.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1110.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:35,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 41 Invalid, 1226 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [34 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1110.64ms Time] [2021-11-12 22:56:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-11-12 22:56:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1360. [2021-11-12 22:56:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3598233995584987) internal successors, (4566), 1359 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4566 transitions. [2021-11-12 22:56:35,953 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4566 transitions. Word has length 33 [2021-11-12 22:56:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:35,954 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4566 transitions. [2021-11-12 22:56:35,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4566 transitions. [2021-11-12 22:56:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:35,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:35,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:35,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-12 22:56:35,957 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash 556405373, now seen corresponding path program 31 times [2021-11-12 22:56:35,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:35,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621445403] [2021-11-12 22:56:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:35,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:36,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:36,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621445403] [2021-11-12 22:56:36,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621445403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:36,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:36,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:36,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531654627] [2021-11-12 22:56:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:36,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:36,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:36,968 INFO L87 Difference]: Start difference. First operand 1360 states and 4566 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:38,392 INFO L93 Difference]: Finished difference Result 2595 states and 7777 transitions. [2021-11-12 22:56:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:38,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:38,397 INFO L225 Difference]: With dead ends: 2595 [2021-11-12 22:56:38,397 INFO L226 Difference]: Without dead ends: 2578 [2021-11-12 22:56:38,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:38,398 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 234 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 825.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 948.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:38,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 41 Invalid, 1119 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [34 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 948.68ms Time] [2021-11-12 22:56:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-11-12 22:56:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1366. [2021-11-12 22:56:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.353113553113553) internal successors, (4577), 1365 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4577 transitions. [2021-11-12 22:56:38,445 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4577 transitions. Word has length 33 [2021-11-12 22:56:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:38,445 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 4577 transitions. [2021-11-12 22:56:38,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4577 transitions. [2021-11-12 22:56:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:38,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:38,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:38,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-12 22:56:38,450 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1110517973, now seen corresponding path program 32 times [2021-11-12 22:56:38,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:38,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353077581] [2021-11-12 22:56:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:38,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:39,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:39,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353077581] [2021-11-12 22:56:39,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353077581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:39,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:39,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:39,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044223529] [2021-11-12 22:56:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:39,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:39,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:39,301 INFO L87 Difference]: Start difference. First operand 1366 states and 4577 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:40,631 INFO L93 Difference]: Finished difference Result 2577 states and 7747 transitions. [2021-11-12 22:56:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:40,631 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:40,636 INFO L225 Difference]: With dead ends: 2577 [2021-11-12 22:56:40,636 INFO L226 Difference]: Without dead ends: 2542 [2021-11-12 22:56:40,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:40,637 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 200 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 763.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 887.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:40,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 41 Invalid, 1304 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [33 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 887.01ms Time] [2021-11-12 22:56:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-11-12 22:56:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1346. [2021-11-12 22:56:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.374721189591078) internal successors, (4539), 1345 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4539 transitions. [2021-11-12 22:56:40,669 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4539 transitions. Word has length 33 [2021-11-12 22:56:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:40,669 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4539 transitions. [2021-11-12 22:56:40,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:40,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4539 transitions. [2021-11-12 22:56:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:40,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:40,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:40,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-12 22:56:40,673 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2038761635, now seen corresponding path program 33 times [2021-11-12 22:56:40,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:40,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366061823] [2021-11-12 22:56:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:40,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:41,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:41,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366061823] [2021-11-12 22:56:41,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366061823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:41,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:41,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:41,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638611808] [2021-11-12 22:56:41,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:41,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:41,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:41,477 INFO L87 Difference]: Start difference. First operand 1346 states and 4539 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:42,867 INFO L93 Difference]: Finished difference Result 2551 states and 7706 transitions. [2021-11-12 22:56:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:56:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:42,872 INFO L225 Difference]: With dead ends: 2551 [2021-11-12 22:56:42,872 INFO L226 Difference]: Without dead ends: 2530 [2021-11-12 22:56:42,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:56:42,872 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 216 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 755.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 888.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:42,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 47 Invalid, 1203 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [35 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 888.91ms Time] [2021-11-12 22:56:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-12 22:56:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1370. [2021-11-12 22:56:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.352081811541271) internal successors, (4589), 1369 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4589 transitions. [2021-11-12 22:56:42,918 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4589 transitions. Word has length 33 [2021-11-12 22:56:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:42,918 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4589 transitions. [2021-11-12 22:56:42,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4589 transitions. [2021-11-12 22:56:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:42,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:42,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:42,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-12 22:56:42,923 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:42,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:42,923 INFO L85 PathProgramCache]: Analyzing trace with hash -170544643, now seen corresponding path program 34 times [2021-11-12 22:56:42,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:42,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886105640] [2021-11-12 22:56:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:42,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:43,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:43,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886105640] [2021-11-12 22:56:43,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886105640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:43,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:43,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:43,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298959185] [2021-11-12 22:56:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:43,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:43,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:43,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:43,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:43,801 INFO L87 Difference]: Start difference. First operand 1370 states and 4589 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:45,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:45,279 INFO L93 Difference]: Finished difference Result 2569 states and 7730 transitions. [2021-11-12 22:56:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:56:45,279 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:45,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:45,283 INFO L225 Difference]: With dead ends: 2569 [2021-11-12 22:56:45,283 INFO L226 Difference]: Without dead ends: 2552 [2021-11-12 22:56:45,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:56:45,284 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 221 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 784.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.85ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 907.67ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:45,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 52 Invalid, 1243 Unknown, 0 Unchecked, 3.85ms Time], IncrementalHoareTripleChecker [35 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 907.67ms Time] [2021-11-12 22:56:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-11-12 22:56:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1376. [2021-11-12 22:56:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.3454545454545452) internal successors, (4600), 1375 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4600 transitions. [2021-11-12 22:56:45,315 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4600 transitions. Word has length 33 [2021-11-12 22:56:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:45,315 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4600 transitions. [2021-11-12 22:56:45,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4600 transitions. [2021-11-12 22:56:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:45,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:45,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:45,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-12 22:56:45,319 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:45,319 INFO L85 PathProgramCache]: Analyzing trace with hash 383567957, now seen corresponding path program 35 times [2021-11-12 22:56:45,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:45,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080347501] [2021-11-12 22:56:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:45,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:46,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:46,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080347501] [2021-11-12 22:56:46,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080347501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:46,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:46,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:46,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946279509] [2021-11-12 22:56:46,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:46,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:46,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:46,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:46,239 INFO L87 Difference]: Start difference. First operand 1376 states and 4600 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:47,800 INFO L93 Difference]: Finished difference Result 2551 states and 7700 transitions. [2021-11-12 22:56:47,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:56:47,801 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:47,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:47,805 INFO L225 Difference]: With dead ends: 2551 [2021-11-12 22:56:47,805 INFO L226 Difference]: Without dead ends: 2524 [2021-11-12 22:56:47,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:56:47,806 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 221 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 867.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 994.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:47,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 47 Invalid, 1195 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [35 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 994.43ms Time] [2021-11-12 22:56:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2021-11-12 22:56:47,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 1364. [2021-11-12 22:56:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 3.3543653705062364) internal successors, (4572), 1363 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4572 transitions. [2021-11-12 22:56:47,850 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4572 transitions. Word has length 33 [2021-11-12 22:56:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:47,850 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 4572 transitions. [2021-11-12 22:56:47,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4572 transitions. [2021-11-12 22:56:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:47,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:47,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:47,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-12 22:56:47,855 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:47,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1341789763, now seen corresponding path program 36 times [2021-11-12 22:56:47,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:47,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222379490] [2021-11-12 22:56:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:47,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:48,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:48,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222379490] [2021-11-12 22:56:48,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222379490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:48,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:48,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:48,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935600430] [2021-11-12 22:56:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:48,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:48,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:48,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:48,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:48,607 INFO L87 Difference]: Start difference. First operand 1364 states and 4572 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:49,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:49,924 INFO L93 Difference]: Finished difference Result 2525 states and 7646 transitions. [2021-11-12 22:56:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:49,924 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:49,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:49,929 INFO L225 Difference]: With dead ends: 2525 [2021-11-12 22:56:49,929 INFO L226 Difference]: Without dead ends: 2500 [2021-11-12 22:56:49,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:49,930 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 211 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 735.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 849.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:49,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 51 Invalid, 1193 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [32 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 849.88ms Time] [2021-11-12 22:56:49,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2021-11-12 22:56:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1370. [2021-11-12 22:56:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.347699050401753) internal successors, (4583), 1369 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4583 transitions. [2021-11-12 22:56:49,966 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4583 transitions. Word has length 33 [2021-11-12 22:56:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:49,966 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4583 transitions. [2021-11-12 22:56:49,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4583 transitions. [2021-11-12 22:56:49,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:49,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:49,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:49,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-12 22:56:49,969 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash -481725941, now seen corresponding path program 37 times [2021-11-12 22:56:49,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:49,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259881875] [2021-11-12 22:56:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:49,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:50,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:50,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259881875] [2021-11-12 22:56:50,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259881875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:50,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:50,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:50,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82932300] [2021-11-12 22:56:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:50,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:50,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:50,875 INFO L87 Difference]: Start difference. First operand 1370 states and 4583 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:52,280 INFO L93 Difference]: Finished difference Result 2525 states and 7630 transitions. [2021-11-12 22:56:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:52,285 INFO L225 Difference]: With dead ends: 2525 [2021-11-12 22:56:52,285 INFO L226 Difference]: Without dead ends: 2508 [2021-11-12 22:56:52,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:52,286 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 228 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 809.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 931.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:52,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 46 Invalid, 1154 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [33 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 931.87ms Time] [2021-11-12 22:56:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2021-11-12 22:56:52,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 1376. [2021-11-12 22:56:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.341090909090909) internal successors, (4594), 1375 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4594 transitions. [2021-11-12 22:56:52,318 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4594 transitions. Word has length 33 [2021-11-12 22:56:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:52,318 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4594 transitions. [2021-11-12 22:56:52,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4594 transitions. [2021-11-12 22:56:52,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:52,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:52,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:52,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-12 22:56:52,321 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:52,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:52,321 INFO L85 PathProgramCache]: Analyzing trace with hash 72386659, now seen corresponding path program 38 times [2021-11-12 22:56:52,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:52,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081652088] [2021-11-12 22:56:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:52,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:53,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:53,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081652088] [2021-11-12 22:56:53,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081652088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:53,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:53,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:53,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915457420] [2021-11-12 22:56:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:53,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:53,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:53,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:53,342 INFO L87 Difference]: Start difference. First operand 1376 states and 4594 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:54,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:54,765 INFO L93 Difference]: Finished difference Result 2507 states and 7600 transitions. [2021-11-12 22:56:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:56:54,765 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:54,770 INFO L225 Difference]: With dead ends: 2507 [2021-11-12 22:56:54,770 INFO L226 Difference]: Without dead ends: 2458 [2021-11-12 22:56:54,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:56:54,771 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 192 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 799.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.09ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 927.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:54,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 48 Invalid, 1282 Unknown, 0 Unchecked, 4.09ms Time], IncrementalHoareTripleChecker [32 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 927.58ms Time] [2021-11-12 22:56:54,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-11-12 22:56:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1342. [2021-11-12 22:56:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.3758389261744965) internal successors, (4527), 1341 states have internal predecessors, (4527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4527 transitions. [2021-11-12 22:56:54,804 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4527 transitions. Word has length 33 [2021-11-12 22:56:54,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:54,804 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 4527 transitions. [2021-11-12 22:56:54,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4527 transitions. [2021-11-12 22:56:54,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:54,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:54,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:54,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-12 22:56:54,808 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1692304797, now seen corresponding path program 39 times [2021-11-12 22:56:54,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:54,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945159896] [2021-11-12 22:56:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:54,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:55,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:55,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945159896] [2021-11-12 22:56:55,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945159896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:55,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:55,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:55,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487708249] [2021-11-12 22:56:55,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:55,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:55,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:55,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:55,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:55,780 INFO L87 Difference]: Start difference. First operand 1342 states and 4527 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:57,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:57,250 INFO L93 Difference]: Finished difference Result 2507 states and 7622 transitions. [2021-11-12 22:56:57,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:56:57,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:57,255 INFO L225 Difference]: With dead ends: 2507 [2021-11-12 22:56:57,255 INFO L226 Difference]: Without dead ends: 2494 [2021-11-12 22:56:57,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:56:57,256 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 226 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 825.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.02ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 951.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:57,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 36 Invalid, 1187 Unknown, 0 Unchecked, 4.02ms Time], IncrementalHoareTripleChecker [37 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 951.42ms Time] [2021-11-12 22:56:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2021-11-12 22:56:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1350. [2021-11-12 22:56:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 22:56:57,290 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 22:56:57,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:56:57,291 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 22:56:57,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 22:56:57,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:56:57,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:56:57,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:56:57,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-12 22:56:57,294 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:56:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:56:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash 414479323, now seen corresponding path program 40 times [2021-11-12 22:56:57,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:56:57,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48469927] [2021-11-12 22:56:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:56:57,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:56:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:56:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:56:58,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:56:58,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48469927] [2021-11-12 22:56:58,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48469927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:56:58,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:56:58,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:56:58,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391091292] [2021-11-12 22:56:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:56:58,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:56:58,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:56:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:56:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:56:58,337 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:56:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:56:59,984 INFO L93 Difference]: Finished difference Result 2523 states and 7642 transitions. [2021-11-12 22:56:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:56:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:56:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:56:59,990 INFO L225 Difference]: With dead ends: 2523 [2021-11-12 22:56:59,990 INFO L226 Difference]: Without dead ends: 2512 [2021-11-12 22:56:59,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:56:59,991 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 952.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1098.35ms IncrementalHoareTripleChecker+Time [2021-11-12 22:56:59,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 42 Invalid, 1352 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [37 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1098.35ms Time] [2021-11-12 22:56:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2021-11-12 22:57:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1352. [2021-11-12 22:57:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:57:00,025 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:57:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:00,025 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:57:00,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:57:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:00,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:00,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:00,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-12 22:57:00,028 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1191210083, now seen corresponding path program 41 times [2021-11-12 22:57:00,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:00,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995829480] [2021-11-12 22:57:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:00,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:01,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:01,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995829480] [2021-11-12 22:57:01,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995829480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:01,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:01,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:01,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302476564] [2021-11-12 22:57:01,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:01,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:01,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:01,046 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:02,652 INFO L93 Difference]: Finished difference Result 2511 states and 7628 transitions. [2021-11-12 22:57:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:02,652 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:02,657 INFO L225 Difference]: With dead ends: 2511 [2021-11-12 22:57:02,657 INFO L226 Difference]: Without dead ends: 2492 [2021-11-12 22:57:02,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:02,657 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 202 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 921.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1054.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:02,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 41 Invalid, 1344 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [35 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1054.77ms Time] [2021-11-12 22:57:02,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-11-12 22:57:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 1348. [2021-11-12 22:57:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3734224201930214) internal successors, (4544), 1347 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4544 transitions. [2021-11-12 22:57:02,709 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4544 transitions. Word has length 33 [2021-11-12 22:57:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:02,709 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4544 transitions. [2021-11-12 22:57:02,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4544 transitions. [2021-11-12 22:57:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:02,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:02,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:02,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-12 22:57:02,714 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:02,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1202679719, now seen corresponding path program 42 times [2021-11-12 22:57:02,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:02,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700097093] [2021-11-12 22:57:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:02,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:03,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:03,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700097093] [2021-11-12 22:57:03,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700097093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:03,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:03,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:03,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238581677] [2021-11-12 22:57:03,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:03,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:03,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:03,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:03,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:03,667 INFO L87 Difference]: Start difference. First operand 1348 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:05,345 INFO L93 Difference]: Finished difference Result 2529 states and 7653 transitions. [2021-11-12 22:57:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:05,346 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:05,351 INFO L225 Difference]: With dead ends: 2529 [2021-11-12 22:57:05,351 INFO L226 Difference]: Without dead ends: 2518 [2021-11-12 22:57:05,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:05,352 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 231 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 938.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.85ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1079.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:05,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 43 Invalid, 1339 Unknown, 0 Unchecked, 4.85ms Time], IncrementalHoareTripleChecker [36 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1079.48ms Time] [2021-11-12 22:57:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-12 22:57:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1352. [2021-11-12 22:57:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:57:05,386 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:57:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:05,386 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:57:05,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:57:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:05,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:05,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:05,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-12 22:57:05,390 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1486598171, now seen corresponding path program 43 times [2021-11-12 22:57:05,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:05,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374286287] [2021-11-12 22:57:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:05,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:06,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:06,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374286287] [2021-11-12 22:57:06,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374286287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:06,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:06,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:06,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902128115] [2021-11-12 22:57:06,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:06,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:06,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:06,397 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:08,259 INFO L93 Difference]: Finished difference Result 2533 states and 7659 transitions. [2021-11-12 22:57:08,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:08,259 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:08,264 INFO L225 Difference]: With dead ends: 2533 [2021-11-12 22:57:08,265 INFO L226 Difference]: Without dead ends: 2516 [2021-11-12 22:57:08,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:08,266 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 248 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1050.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.52ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1210.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:08,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 43 Invalid, 1345 Unknown, 0 Unchecked, 5.52ms Time], IncrementalHoareTripleChecker [38 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1210.81ms Time] [2021-11-12 22:57:08,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-11-12 22:57:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1350. [2021-11-12 22:57:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:57:08,303 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:57:08,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:08,304 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:57:08,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:08,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:57:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:08,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:08,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:08,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-12 22:57:08,309 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1013189021, now seen corresponding path program 44 times [2021-11-12 22:57:08,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:08,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969957582] [2021-11-12 22:57:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:08,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:09,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:09,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969957582] [2021-11-12 22:57:09,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969957582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:09,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:09,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:09,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805143995] [2021-11-12 22:57:09,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:09,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:09,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:09,338 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:11,138 INFO L93 Difference]: Finished difference Result 2515 states and 7634 transitions. [2021-11-12 22:57:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:11,143 INFO L225 Difference]: With dead ends: 2515 [2021-11-12 22:57:11,143 INFO L226 Difference]: Without dead ends: 2490 [2021-11-12 22:57:11,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:11,144 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 218 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 989.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1144.49ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:11,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 38 Invalid, 1230 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [36 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1144.49ms Time] [2021-11-12 22:57:11,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-11-12 22:57:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1346. [2021-11-12 22:57:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.374721189591078) internal successors, (4539), 1345 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4539 transitions. [2021-11-12 22:57:11,181 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4539 transitions. Word has length 33 [2021-11-12 22:57:11,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:11,181 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4539 transitions. [2021-11-12 22:57:11,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4539 transitions. [2021-11-12 22:57:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:11,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:11,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:11,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-12 22:57:11,186 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1416235111, now seen corresponding path program 45 times [2021-11-12 22:57:11,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:11,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767100791] [2021-11-12 22:57:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:11,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:12,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:12,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767100791] [2021-11-12 22:57:12,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767100791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:12,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:12,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:12,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282702157] [2021-11-12 22:57:12,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:12,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:12,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:12,406 INFO L87 Difference]: Start difference. First operand 1346 states and 4539 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:14,295 INFO L93 Difference]: Finished difference Result 2541 states and 7686 transitions. [2021-11-12 22:57:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:57:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:14,301 INFO L225 Difference]: With dead ends: 2541 [2021-11-12 22:57:14,301 INFO L226 Difference]: Without dead ends: 2528 [2021-11-12 22:57:14,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=201, Invalid=399, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:57:14,302 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1040.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1205.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:14,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 33 Invalid, 1307 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [37 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1205.84ms Time] [2021-11-12 22:57:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-11-12 22:57:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1350. [2021-11-12 22:57:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 22:57:14,342 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 22:57:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:14,343 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 22:57:14,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 22:57:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:14,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:14,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:14,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-12 22:57:14,347 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:14,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1660432279, now seen corresponding path program 46 times [2021-11-12 22:57:14,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:14,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206624361] [2021-11-12 22:57:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:14,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:15,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:15,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206624361] [2021-11-12 22:57:15,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206624361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:15,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:15,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:15,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230785536] [2021-11-12 22:57:15,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:15,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:15,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:15,513 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:17,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:17,418 INFO L93 Difference]: Finished difference Result 2569 states and 7730 transitions. [2021-11-12 22:57:17,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:57:17,419 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:17,424 INFO L225 Difference]: With dead ends: 2569 [2021-11-12 22:57:17,424 INFO L226 Difference]: Without dead ends: 2558 [2021-11-12 22:57:17,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=220, Invalid=430, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:57:17,425 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 233 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1012.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.27ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1186.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:17,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 41 Invalid, 1331 Unknown, 0 Unchecked, 5.27ms Time], IncrementalHoareTripleChecker [39 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1186.65ms Time] [2021-11-12 22:57:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-11-12 22:57:17,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1352. [2021-11-12 22:57:17,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:57:17,471 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:57:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:17,471 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:57:17,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:57:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:17,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:17,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:17,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-12 22:57:17,476 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:17,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1125202477, now seen corresponding path program 47 times [2021-11-12 22:57:17,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:17,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254465353] [2021-11-12 22:57:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:17,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:18,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:18,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254465353] [2021-11-12 22:57:18,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254465353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:18,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:18,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:18,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897391687] [2021-11-12 22:57:18,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:18,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:18,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:18,491 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:20,484 INFO L93 Difference]: Finished difference Result 2557 states and 7716 transitions. [2021-11-12 22:57:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 22:57:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:20,491 INFO L225 Difference]: With dead ends: 2557 [2021-11-12 22:57:20,491 INFO L226 Difference]: Without dead ends: 2536 [2021-11-12 22:57:20,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=239, Invalid=463, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:57:20,492 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 224 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1011.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.30ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1169.97ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:20,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 45 Invalid, 1240 Unknown, 0 Unchecked, 5.30ms Time], IncrementalHoareTripleChecker [40 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1169.97ms Time] [2021-11-12 22:57:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2021-11-12 22:57:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 1348. [2021-11-12 22:57:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3734224201930214) internal successors, (4544), 1347 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4544 transitions. [2021-11-12 22:57:20,531 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4544 transitions. Word has length 33 [2021-11-12 22:57:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:20,531 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4544 transitions. [2021-11-12 22:57:20,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4544 transitions. [2021-11-12 22:57:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:20,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:20,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:20,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-12 22:57:20,534 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1550259215, now seen corresponding path program 48 times [2021-11-12 22:57:20,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:20,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585914761] [2021-11-12 22:57:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:20,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:21,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:21,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585914761] [2021-11-12 22:57:21,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585914761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:21,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:21,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:21,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758022464] [2021-11-12 22:57:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:21,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:21,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:21,722 INFO L87 Difference]: Start difference. First operand 1348 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:23,532 INFO L93 Difference]: Finished difference Result 2557 states and 7704 transitions. [2021-11-12 22:57:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:23,533 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:23,537 INFO L225 Difference]: With dead ends: 2557 [2021-11-12 22:57:23,537 INFO L226 Difference]: Without dead ends: 2544 [2021-11-12 22:57:23,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:23,538 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 250 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1044.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1204.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:23,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 36 Invalid, 1297 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [38 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1204.09ms Time] [2021-11-12 22:57:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-11-12 22:57:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 1350. [2021-11-12 22:57:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:57:23,568 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:57:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:23,568 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:57:23,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:57:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:23,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:23,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:23,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-12 22:57:23,570 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash 556524905, now seen corresponding path program 49 times [2021-11-12 22:57:23,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:23,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201944247] [2021-11-12 22:57:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:23,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:24,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:24,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201944247] [2021-11-12 22:57:24,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201944247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:24,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:24,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:24,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529733758] [2021-11-12 22:57:24,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:24,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:24,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:24,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:24,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:24,630 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:26,630 INFO L93 Difference]: Finished difference Result 2561 states and 7712 transitions. [2021-11-12 22:57:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:26,637 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:26,642 INFO L225 Difference]: With dead ends: 2561 [2021-11-12 22:57:26,642 INFO L226 Difference]: Without dead ends: 2550 [2021-11-12 22:57:26,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:26,643 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 244 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1218.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.15ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1390.78ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:26,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 41 Invalid, 1368 Unknown, 0 Unchecked, 6.15ms Time], IncrementalHoareTripleChecker [37 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 1390.78ms Time] [2021-11-12 22:57:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-12 22:57:26,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1352. [2021-11-12 22:57:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:26,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:57:26,683 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:57:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:26,684 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:57:26,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:57:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:26,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:26,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:26,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-12 22:57:26,689 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:26,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:26,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1049164501, now seen corresponding path program 50 times [2021-11-12 22:57:26,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:26,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865626976] [2021-11-12 22:57:26,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:26,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:27,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:27,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865626976] [2021-11-12 22:57:27,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865626976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:27,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:27,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:27,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185919949] [2021-11-12 22:57:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:27,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:27,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:27,669 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:29,427 INFO L93 Difference]: Finished difference Result 2549 states and 7698 transitions. [2021-11-12 22:57:29,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:29,427 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:29,432 INFO L225 Difference]: With dead ends: 2549 [2021-11-12 22:57:29,433 INFO L226 Difference]: Without dead ends: 2530 [2021-11-12 22:57:29,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:29,434 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 229 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 967.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1118.92ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:29,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 41 Invalid, 1278 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [38 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1118.92ms Time] [2021-11-12 22:57:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-12 22:57:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1348. [2021-11-12 22:57:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3719376391982183) internal successors, (4542), 1347 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4542 transitions. [2021-11-12 22:57:29,487 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4542 transitions. Word has length 33 [2021-11-12 22:57:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:29,487 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4542 transitions. [2021-11-12 22:57:29,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4542 transitions. [2021-11-12 22:57:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:29,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:29,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:29,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-12 22:57:29,490 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash -774633999, now seen corresponding path program 51 times [2021-11-12 22:57:29,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:29,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307827049] [2021-11-12 22:57:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:29,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:30,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:30,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307827049] [2021-11-12 22:57:30,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307827049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:30,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:30,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:30,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203396175] [2021-11-12 22:57:30,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:30,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:30,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:30,730 INFO L87 Difference]: Start difference. First operand 1348 states and 4542 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:32,487 INFO L93 Difference]: Finished difference Result 2569 states and 7735 transitions. [2021-11-12 22:57:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:32,488 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:32,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:32,494 INFO L225 Difference]: With dead ends: 2569 [2021-11-12 22:57:32,494 INFO L226 Difference]: Without dead ends: 2558 [2021-11-12 22:57:32,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:32,495 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 266 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 978.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.53ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1131.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:32,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 39 Invalid, 1179 Unknown, 0 Unchecked, 5.53ms Time], IncrementalHoareTripleChecker [39 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1131.02ms Time] [2021-11-12 22:57:32,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-11-12 22:57:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1352. [2021-11-12 22:57:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:57:32,550 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:57:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:32,550 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:57:32,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:32,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:57:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:32,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:32,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:32,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-12 22:57:32,553 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -239404197, now seen corresponding path program 52 times [2021-11-12 22:57:32,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:32,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450721239] [2021-11-12 22:57:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:32,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:33,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:33,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450721239] [2021-11-12 22:57:33,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450721239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:33,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:33,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:33,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031415846] [2021-11-12 22:57:33,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:33,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:33,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:33,867 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:35,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:35,696 INFO L93 Difference]: Finished difference Result 2575 states and 7745 transitions. [2021-11-12 22:57:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:35,697 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:35,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:35,702 INFO L225 Difference]: With dead ends: 2575 [2021-11-12 22:57:35,702 INFO L226 Difference]: Without dead ends: 2556 [2021-11-12 22:57:35,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:35,703 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 255 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1016.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1178.12ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:35,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 47 Invalid, 1266 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [41 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1178.12ms Time] [2021-11-12 22:57:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-12 22:57:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1350. [2021-11-12 22:57:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:57:35,753 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:57:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:35,754 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:57:35,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:57:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:35,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:35,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:35,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-12 22:57:35,759 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1576347289, now seen corresponding path program 53 times [2021-11-12 22:57:35,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:35,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938549341] [2021-11-12 22:57:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:35,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:36,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:36,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938549341] [2021-11-12 22:57:36,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938549341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:36,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:36,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:36,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903451120] [2021-11-12 22:57:36,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:36,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:36,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:36,768 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:38,594 INFO L93 Difference]: Finished difference Result 2565 states and 7725 transitions. [2021-11-12 22:57:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:38,595 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:38,600 INFO L225 Difference]: With dead ends: 2565 [2021-11-12 22:57:38,600 INFO L226 Difference]: Without dead ends: 2554 [2021-11-12 22:57:38,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:38,601 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 258 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 998.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1156.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:38,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 41 Invalid, 1241 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [40 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1156.03ms Time] [2021-11-12 22:57:38,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-11-12 22:57:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1352. [2021-11-12 22:57:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:57:38,636 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:57:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:38,636 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:57:38,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:57:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:38,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:38,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:38,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-12 22:57:38,639 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash -29342117, now seen corresponding path program 54 times [2021-11-12 22:57:38,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:38,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341798001] [2021-11-12 22:57:38,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:38,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:39,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:39,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341798001] [2021-11-12 22:57:39,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341798001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:39,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:39,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:39,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837442532] [2021-11-12 22:57:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:39,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:39,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:39,703 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:41,621 INFO L93 Difference]: Finished difference Result 2559 states and 7722 transitions. [2021-11-12 22:57:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:41,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:41,627 INFO L225 Difference]: With dead ends: 2559 [2021-11-12 22:57:41,628 INFO L226 Difference]: Without dead ends: 2542 [2021-11-12 22:57:41,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:41,628 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1102.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.69ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1274.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:41,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 42 Invalid, 1422 Unknown, 0 Unchecked, 5.69ms Time], IncrementalHoareTripleChecker [38 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1274.29ms Time] [2021-11-12 22:57:41,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-11-12 22:57:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1350. [2021-11-12 22:57:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 22:57:41,664 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 22:57:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:41,664 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 22:57:41,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 22:57:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:41,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:41,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:41,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-12 22:57:41,669 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1523831769, now seen corresponding path program 55 times [2021-11-12 22:57:41,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:41,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846657582] [2021-11-12 22:57:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:41,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:42,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:42,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846657582] [2021-11-12 22:57:42,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846657582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:42,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:42,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:42,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813974171] [2021-11-12 22:57:42,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:42,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:42,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:42,749 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:44,603 INFO L93 Difference]: Finished difference Result 2551 states and 7706 transitions. [2021-11-12 22:57:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:44,609 INFO L225 Difference]: With dead ends: 2551 [2021-11-12 22:57:44,609 INFO L226 Difference]: Without dead ends: 2534 [2021-11-12 22:57:44,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:44,610 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 220 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1029.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1190.53ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:44,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 40 Invalid, 1275 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [37 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1190.53ms Time] [2021-11-12 22:57:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2021-11-12 22:57:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 1356. [2021-11-12 22:57:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3623616236162364) internal successors, (4556), 1355 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4556 transitions. [2021-11-12 22:57:44,652 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4556 transitions. Word has length 33 [2021-11-12 22:57:44,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:44,652 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4556 transitions. [2021-11-12 22:57:44,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4556 transitions. [2021-11-12 22:57:44,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:44,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:44,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:44,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-12 22:57:44,657 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:44,658 INFO L85 PathProgramCache]: Analyzing trace with hash -617087439, now seen corresponding path program 56 times [2021-11-12 22:57:44,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:44,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163389511] [2021-11-12 22:57:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:44,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:45,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:45,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163389511] [2021-11-12 22:57:45,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163389511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:45,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:45,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:45,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018683175] [2021-11-12 22:57:45,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:45,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:45,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:45,706 INFO L87 Difference]: Start difference. First operand 1356 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:47,518 INFO L93 Difference]: Finished difference Result 2533 states and 7676 transitions. [2021-11-12 22:57:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:57:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:47,524 INFO L225 Difference]: With dead ends: 2533 [2021-11-12 22:57:47,524 INFO L226 Difference]: Without dead ends: 2508 [2021-11-12 22:57:47,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:57:47,525 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 206 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 999.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1157.40ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:47,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 34 Invalid, 1261 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [37 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1157.40ms Time] [2021-11-12 22:57:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2021-11-12 22:57:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 1346. [2021-11-12 22:57:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.3732342007434943) internal successors, (4537), 1345 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4537 transitions. [2021-11-12 22:57:47,561 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4537 transitions. Word has length 33 [2021-11-12 22:57:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:47,561 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4537 transitions. [2021-11-12 22:57:47,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4537 transitions. [2021-11-12 22:57:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:47,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:47,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:47,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-12 22:57:47,565 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:47,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash 347043113, now seen corresponding path program 57 times [2021-11-12 22:57:47,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:47,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057913466] [2021-11-12 22:57:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:47,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:48,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:48,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057913466] [2021-11-12 22:57:48,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057913466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:48,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:48,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:48,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686014147] [2021-11-12 22:57:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:48,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:48,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:48,564 INFO L87 Difference]: Start difference. First operand 1346 states and 4537 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:50,619 INFO L93 Difference]: Finished difference Result 2593 states and 7782 transitions. [2021-11-12 22:57:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:57:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:50,625 INFO L225 Difference]: With dead ends: 2593 [2021-11-12 22:57:50,625 INFO L226 Difference]: Without dead ends: 2582 [2021-11-12 22:57:50,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:57:50,626 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 235 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1158.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.98ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1337.75ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:50,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 53 Invalid, 1397 Unknown, 0 Unchecked, 5.98ms Time], IncrementalHoareTripleChecker [40 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1337.75ms Time] [2021-11-12 22:57:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-11-12 22:57:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1352. [2021-11-12 22:57:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:57:50,662 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:57:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:50,662 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:57:50,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:50,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:57:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:50,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:50,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:50,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-12 22:57:50,665 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1258646293, now seen corresponding path program 58 times [2021-11-12 22:57:50,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:50,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171191293] [2021-11-12 22:57:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:50,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:51,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:51,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171191293] [2021-11-12 22:57:51,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171191293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:51,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:51,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:51,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948416959] [2021-11-12 22:57:51,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:51,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:51,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:51,653 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:53,632 INFO L93 Difference]: Finished difference Result 2597 states and 7788 transitions. [2021-11-12 22:57:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:57:53,632 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:53,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:53,638 INFO L225 Difference]: With dead ends: 2597 [2021-11-12 22:57:53,638 INFO L226 Difference]: Without dead ends: 2580 [2021-11-12 22:57:53,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:57:53,639 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 244 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1087.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.59ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1257.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:53,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 48 Invalid, 1297 Unknown, 0 Unchecked, 5.59ms Time], IncrementalHoareTripleChecker [42 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1257.17ms Time] [2021-11-12 22:57:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-11-12 22:57:53,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1350. [2021-11-12 22:57:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:57:53,679 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:57:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:53,679 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:57:53,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:57:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:53,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:53,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:53,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-12 22:57:53,682 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash 536533811, now seen corresponding path program 59 times [2021-11-12 22:57:53,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:53,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550571138] [2021-11-12 22:57:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:53,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:54,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:54,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550571138] [2021-11-12 22:57:54,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550571138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:54,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:54,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:54,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141052130] [2021-11-12 22:57:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:54,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:54,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:54,707 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:56,676 INFO L93 Difference]: Finished difference Result 2601 states and 7794 transitions. [2021-11-12 22:57:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:57:56,676 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:56,682 INFO L225 Difference]: With dead ends: 2601 [2021-11-12 22:57:56,682 INFO L226 Difference]: Without dead ends: 2578 [2021-11-12 22:57:56,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:57:56,683 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 263 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1093.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.73ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1262.76ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:56,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 46 Invalid, 1337 Unknown, 0 Unchecked, 5.73ms Time], IncrementalHoareTripleChecker [41 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1262.76ms Time] [2021-11-12 22:57:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-11-12 22:57:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1348. [2021-11-12 22:57:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3719376391982183) internal successors, (4542), 1347 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4542 transitions. [2021-11-12 22:57:56,719 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4542 transitions. Word has length 33 [2021-11-12 22:57:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:56,719 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4542 transitions. [2021-11-12 22:57:56,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4542 transitions. [2021-11-12 22:57:56,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:56,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:56,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:56,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-12 22:57:56,722 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:56,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:56,723 INFO L85 PathProgramCache]: Analyzing trace with hash 633043251, now seen corresponding path program 60 times [2021-11-12 22:57:56,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:56,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335966199] [2021-11-12 22:57:56,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:56,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:57:57,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:57:57,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335966199] [2021-11-12 22:57:57,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335966199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:57,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:57,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:57:57,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880268807] [2021-11-12 22:57:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:57,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:57:57,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:57:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:57:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:57:57,819 INFO L87 Difference]: Start difference. First operand 1348 states and 4542 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:59,735 INFO L93 Difference]: Finished difference Result 2611 states and 7823 transitions. [2021-11-12 22:57:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:57:59,736 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:57:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:59,740 INFO L225 Difference]: With dead ends: 2611 [2021-11-12 22:57:59,740 INFO L226 Difference]: Without dead ends: 2600 [2021-11-12 22:57:59,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:57:59,741 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1016.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.60ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1179.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:59,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 52 Invalid, 1344 Unknown, 0 Unchecked, 5.60ms Time], IncrementalHoareTripleChecker [43 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 1179.33ms Time] [2021-11-12 22:57:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-11-12 22:57:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1352. [2021-11-12 22:57:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:57:59,796 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:57:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:59,796 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:57:59,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:57:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:57:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:57:59,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:59,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:59,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-12 22:57:59,799 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:57:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1168273053, now seen corresponding path program 61 times [2021-11-12 22:57:59,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:57:59,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073885591] [2021-11-12 22:57:59,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:59,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:57:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:00,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:00,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073885591] [2021-11-12 22:58:00,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073885591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:00,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:00,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:00,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235302412] [2021-11-12 22:58:00,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:00,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:00,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:00,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:00,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:00,674 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:02,445 INFO L93 Difference]: Finished difference Result 2625 states and 7848 transitions. [2021-11-12 22:58:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 22:58:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:02,450 INFO L225 Difference]: With dead ends: 2625 [2021-11-12 22:58:02,450 INFO L226 Difference]: Without dead ends: 2606 [2021-11-12 22:58:02,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=238, Invalid=464, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:58:02,451 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 274 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 903.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.92ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1045.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:02,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 46 Invalid, 1245 Unknown, 0 Unchecked, 4.92ms Time], IncrementalHoareTripleChecker [44 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1045.43ms Time] [2021-11-12 22:58:02,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-11-12 22:58:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1350. [2021-11-12 22:58:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:58:02,486 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:58:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:02,486 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:58:02,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:58:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:02,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:02,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:02,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-12 22:58:02,489 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:02,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1310942757, now seen corresponding path program 62 times [2021-11-12 22:58:02,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:02,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777540715] [2021-11-12 22:58:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:02,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:03,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:03,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:03,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777540715] [2021-11-12 22:58:03,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777540715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:03,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:03,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:03,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620861839] [2021-11-12 22:58:03,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:03,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:03,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:03,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:03,553 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:05,438 INFO L93 Difference]: Finished difference Result 2613 states and 7813 transitions. [2021-11-12 22:58:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:58:05,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:05,443 INFO L225 Difference]: With dead ends: 2613 [2021-11-12 22:58:05,443 INFO L226 Difference]: Without dead ends: 2602 [2021-11-12 22:58:05,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:58:05,444 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 274 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1039.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.56ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1201.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:05,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 49 Invalid, 1311 Unknown, 0 Unchecked, 5.56ms Time], IncrementalHoareTripleChecker [42 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1201.85ms Time] [2021-11-12 22:58:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-12 22:58:05,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1352. [2021-11-12 22:58:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:58:05,481 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:58:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:05,481 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:58:05,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:05,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:58:05,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:05,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:05,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:05,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-12 22:58:05,485 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1378335133, now seen corresponding path program 63 times [2021-11-12 22:58:05,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:05,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746033920] [2021-11-12 22:58:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:05,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:06,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:06,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746033920] [2021-11-12 22:58:06,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746033920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:06,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:06,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:06,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242060269] [2021-11-12 22:58:06,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:06,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:06,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:06,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:06,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:06,543 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:08,502 INFO L93 Difference]: Finished difference Result 2607 states and 7810 transitions. [2021-11-12 22:58:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:58:08,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:08,508 INFO L225 Difference]: With dead ends: 2607 [2021-11-12 22:58:08,508 INFO L226 Difference]: Without dead ends: 2590 [2021-11-12 22:58:08,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:58:08,508 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 263 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1091.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.44ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1257.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:08,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 46 Invalid, 1278 Unknown, 0 Unchecked, 5.44ms Time], IncrementalHoareTripleChecker [43 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1257.15ms Time] [2021-11-12 22:58:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-11-12 22:58:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 1350. [2021-11-12 22:58:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 22:58:08,550 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 22:58:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:08,550 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 22:58:08,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 22:58:08,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:08,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:08,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:08,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-12 22:58:08,554 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:08,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1363458277, now seen corresponding path program 64 times [2021-11-12 22:58:08,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:08,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281202154] [2021-11-12 22:58:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:08,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:09,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:09,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281202154] [2021-11-12 22:58:09,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281202154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:09,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:09,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:09,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105226968] [2021-11-12 22:58:09,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:09,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:09,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:09,566 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:11,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:11,417 INFO L93 Difference]: Finished difference Result 2613 states and 7826 transitions. [2021-11-12 22:58:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:58:11,418 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:11,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:11,423 INFO L225 Difference]: With dead ends: 2613 [2021-11-12 22:58:11,423 INFO L226 Difference]: Without dead ends: 2596 [2021-11-12 22:58:11,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:58:11,424 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 271 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 964.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1120.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:11,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 43 Invalid, 1205 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [43 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1120.23ms Time] [2021-11-12 22:58:11,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2021-11-12 22:58:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 1356. [2021-11-12 22:58:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3623616236162364) internal successors, (4556), 1355 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4556 transitions. [2021-11-12 22:58:11,464 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4556 transitions. Word has length 33 [2021-11-12 22:58:11,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:11,465 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4556 transitions. [2021-11-12 22:58:11,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:11,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4556 transitions. [2021-11-12 22:58:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:11,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:11,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:11,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-12 22:58:11,468 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:11,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 790589811, now seen corresponding path program 65 times [2021-11-12 22:58:11,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:11,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798345204] [2021-11-12 22:58:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:11,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:12,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:12,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798345204] [2021-11-12 22:58:12,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798345204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:12,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:12,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:12,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595848809] [2021-11-12 22:58:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:12,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:12,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:12,537 INFO L87 Difference]: Start difference. First operand 1356 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:14,381 INFO L93 Difference]: Finished difference Result 2595 states and 7796 transitions. [2021-11-12 22:58:14,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 22:58:14,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:14,387 INFO L225 Difference]: With dead ends: 2595 [2021-11-12 22:58:14,387 INFO L226 Difference]: Without dead ends: 2572 [2021-11-12 22:58:14,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=399, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:58:14,388 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 231 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 978.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.37ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1136.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:14,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 41 Invalid, 1260 Unknown, 0 Unchecked, 5.37ms Time], IncrementalHoareTripleChecker [41 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1136.73ms Time] [2021-11-12 22:58:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-11-12 22:58:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1348. [2021-11-12 22:58:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.370452858203415) internal successors, (4540), 1347 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4540 transitions. [2021-11-12 22:58:14,426 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4540 transitions. Word has length 33 [2021-11-12 22:58:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:14,427 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4540 transitions. [2021-11-12 22:58:14,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4540 transitions. [2021-11-12 22:58:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:14,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:14,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:14,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-12 22:58:14,430 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:14,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:14,430 INFO L85 PathProgramCache]: Analyzing trace with hash -503701987, now seen corresponding path program 66 times [2021-11-12 22:58:14,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:14,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355364287] [2021-11-12 22:58:14,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:14,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:15,471 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:15,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355364287] [2021-11-12 22:58:15,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355364287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:15,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:15,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:15,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124169548] [2021-11-12 22:58:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:15,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:15,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:15,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:15,472 INFO L87 Difference]: Start difference. First operand 1348 states and 4540 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:17,340 INFO L93 Difference]: Finished difference Result 2573 states and 7748 transitions. [2021-11-12 22:58:17,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:58:17,340 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:17,346 INFO L225 Difference]: With dead ends: 2573 [2021-11-12 22:58:17,346 INFO L226 Difference]: Without dead ends: 2552 [2021-11-12 22:58:17,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=221, Invalid=429, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:58:17,347 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 227 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 982.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1134.07ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:17,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 37 Invalid, 1180 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [40 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1134.07ms Time] [2021-11-12 22:58:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-11-12 22:58:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1354. [2021-11-12 22:58:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3636363636363638) internal successors, (4551), 1353 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:17,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4551 transitions. [2021-11-12 22:58:17,382 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4551 transitions. Word has length 33 [2021-11-12 22:58:17,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:17,382 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4551 transitions. [2021-11-12 22:58:17,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:17,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4551 transitions. [2021-11-12 22:58:17,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:17,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:17,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:17,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-12 22:58:17,385 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:17,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1862060059, now seen corresponding path program 67 times [2021-11-12 22:58:17,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:17,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773593481] [2021-11-12 22:58:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:17,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:18,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:18,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773593481] [2021-11-12 22:58:18,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773593481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:18,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:18,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:18,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489889509] [2021-11-12 22:58:18,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:18,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:18,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:18,472 INFO L87 Difference]: Start difference. First operand 1354 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:20,537 INFO L93 Difference]: Finished difference Result 2583 states and 7767 transitions. [2021-11-12 22:58:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 22:58:20,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:20,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:20,543 INFO L225 Difference]: With dead ends: 2583 [2021-11-12 22:58:20,543 INFO L226 Difference]: Without dead ends: 2566 [2021-11-12 22:58:20,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=241, Invalid=461, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:58:20,544 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 229 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1057.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.63ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1223.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:20,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 48 Invalid, 1287 Unknown, 0 Unchecked, 5.63ms Time], IncrementalHoareTripleChecker [44 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1223.38ms Time] [2021-11-12 22:58:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-11-12 22:58:20,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1360. [2021-11-12 22:58:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.356880058866814) internal successors, (4562), 1359 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4562 transitions. [2021-11-12 22:58:20,599 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4562 transitions. Word has length 33 [2021-11-12 22:58:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:20,600 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4562 transitions. [2021-11-12 22:58:20,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4562 transitions. [2021-11-12 22:58:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:20,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:20,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:20,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-12 22:58:20,603 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:20,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:20,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1878794637, now seen corresponding path program 68 times [2021-11-12 22:58:20,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:20,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280350429] [2021-11-12 22:58:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:20,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:21,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:21,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280350429] [2021-11-12 22:58:21,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280350429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:21,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:21,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:21,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735841091] [2021-11-12 22:58:21,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:21,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:21,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:21,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:21,578 INFO L87 Difference]: Start difference. First operand 1360 states and 4562 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:23,677 INFO L93 Difference]: Finished difference Result 2557 states and 7722 transitions. [2021-11-12 22:58:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:58:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:23,682 INFO L225 Difference]: With dead ends: 2557 [2021-11-12 22:58:23,682 INFO L226 Difference]: Without dead ends: 2526 [2021-11-12 22:58:23,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:58:23,684 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1113.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.77ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1278.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:23,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 41 Invalid, 1255 Unknown, 0 Unchecked, 5.77ms Time], IncrementalHoareTripleChecker [41 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1278.02ms Time] [2021-11-12 22:58:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-12 22:58:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1344. [2021-11-12 22:58:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.3745346239761727) internal successors, (4532), 1343 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4532 transitions. [2021-11-12 22:58:23,718 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4532 transitions. Word has length 33 [2021-11-12 22:58:23,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:23,719 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 4532 transitions. [2021-11-12 22:58:23,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:23,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4532 transitions. [2021-11-12 22:58:23,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:23,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:23,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:23,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-12 22:58:23,721 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:23,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1622228067, now seen corresponding path program 69 times [2021-11-12 22:58:23,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:23,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593625513] [2021-11-12 22:58:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:23,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:24,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:24,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593625513] [2021-11-12 22:58:24,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593625513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:24,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:24,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:24,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823170701] [2021-11-12 22:58:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:24,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:24,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:24,603 INFO L87 Difference]: Start difference. First operand 1344 states and 4532 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:26,360 INFO L93 Difference]: Finished difference Result 2473 states and 7546 transitions. [2021-11-12 22:58:26,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:26,361 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:26,366 INFO L225 Difference]: With dead ends: 2473 [2021-11-12 22:58:26,366 INFO L226 Difference]: Without dead ends: 2460 [2021-11-12 22:58:26,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:26,366 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 197 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1039.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1203.22ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:26,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 37 Invalid, 1397 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [32 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1203.22ms Time] [2021-11-12 22:58:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-12 22:58:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1350. [2021-11-12 22:58:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:58:26,401 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:58:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:26,401 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:58:26,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:58:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:26,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:26,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:26,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-12 22:58:26,404 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1378030899, now seen corresponding path program 70 times [2021-11-12 22:58:26,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:26,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080102406] [2021-11-12 22:58:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:26,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:27,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:27,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080102406] [2021-11-12 22:58:27,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080102406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:27,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:27,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:27,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005526673] [2021-11-12 22:58:27,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:27,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:27,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:27,248 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:28,923 INFO L93 Difference]: Finished difference Result 2491 states and 7570 transitions. [2021-11-12 22:58:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:28,929 INFO L225 Difference]: With dead ends: 2491 [2021-11-12 22:58:28,929 INFO L226 Difference]: Without dead ends: 2480 [2021-11-12 22:58:28,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:28,929 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 211 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 963.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.06ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1117.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:28,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 46 Invalid, 1301 Unknown, 0 Unchecked, 5.06ms Time], IncrementalHoareTripleChecker [35 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1117.46ms Time] [2021-11-12 22:58:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2021-11-12 22:58:28,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1352. [2021-11-12 22:58:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:58:28,962 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:58:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:28,962 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:58:28,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:58:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:28,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:28,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:28,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-12 22:58:28,965 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1913260701, now seen corresponding path program 71 times [2021-11-12 22:58:28,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:28,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704000873] [2021-11-12 22:58:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:28,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:29,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:29,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704000873] [2021-11-12 22:58:29,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704000873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:29,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:29,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:29,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617862452] [2021-11-12 22:58:29,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:29,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:29,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:29,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:29,747 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:31,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:31,489 INFO L93 Difference]: Finished difference Result 2479 states and 7556 transitions. [2021-11-12 22:58:31,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:31,490 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:31,495 INFO L225 Difference]: With dead ends: 2479 [2021-11-12 22:58:31,495 INFO L226 Difference]: Without dead ends: 2458 [2021-11-12 22:58:31,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:31,495 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 197 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 977.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.85ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1128.77ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:31,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 50 Invalid, 1201 Unknown, 0 Unchecked, 4.85ms Time], IncrementalHoareTripleChecker [33 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 1128.77ms Time] [2021-11-12 22:58:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-11-12 22:58:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1348. [2021-11-12 22:58:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3719376391982183) internal successors, (4542), 1347 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4542 transitions. [2021-11-12 22:58:31,529 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4542 transitions. Word has length 33 [2021-11-12 22:58:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:31,530 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4542 transitions. [2021-11-12 22:58:31,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4542 transitions. [2021-11-12 22:58:31,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:31,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:31,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:31,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-12 22:58:31,533 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:31,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1876700599, now seen corresponding path program 72 times [2021-11-12 22:58:31,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:31,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529795240] [2021-11-12 22:58:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:31,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:32,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:32,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529795240] [2021-11-12 22:58:32,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529795240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:32,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:32,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:32,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429267587] [2021-11-12 22:58:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:32,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:32,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:32,413 INFO L87 Difference]: Start difference. First operand 1348 states and 4542 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:34,166 INFO L93 Difference]: Finished difference Result 2499 states and 7585 transitions. [2021-11-12 22:58:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:34,171 INFO L225 Difference]: With dead ends: 2499 [2021-11-12 22:58:34,172 INFO L226 Difference]: Without dead ends: 2488 [2021-11-12 22:58:34,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:34,172 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 236 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1033.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.17ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1193.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:34,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 39 Invalid, 1267 Unknown, 0 Unchecked, 5.17ms Time], IncrementalHoareTripleChecker [34 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1193.58ms Time] [2021-11-12 22:58:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2021-11-12 22:58:34,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 1352. [2021-11-12 22:58:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:58:34,205 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:58:34,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:34,205 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:58:34,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:58:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:34,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:34,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:34,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-12 22:58:34,208 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1341470797, now seen corresponding path program 73 times [2021-11-12 22:58:34,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:34,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508462461] [2021-11-12 22:58:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:34,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:35,018 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:35,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508462461] [2021-11-12 22:58:35,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508462461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:35,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:35,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:35,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471516572] [2021-11-12 22:58:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:35,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:35,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:35,019 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:36,444 INFO L93 Difference]: Finished difference Result 2505 states and 7595 transitions. [2021-11-12 22:58:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:36,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:36,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:36,449 INFO L225 Difference]: With dead ends: 2505 [2021-11-12 22:58:36,449 INFO L226 Difference]: Without dead ends: 2486 [2021-11-12 22:58:36,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:36,450 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 240 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 801.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 923.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:36,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 43 Invalid, 1120 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [34 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 923.13ms Time] [2021-11-12 22:58:36,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2021-11-12 22:58:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 1350. [2021-11-12 22:58:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 22:58:36,481 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 22:58:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:36,481 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 22:58:36,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 22:58:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:36,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:36,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:36,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-12 22:58:36,484 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:36,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash -681221943, now seen corresponding path program 74 times [2021-11-12 22:58:36,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:36,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860511071] [2021-11-12 22:58:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:36,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:37,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:37,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860511071] [2021-11-12 22:58:37,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860511071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:37,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:37,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:37,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741138764] [2021-11-12 22:58:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:37,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:37,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:37,238 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:38,846 INFO L93 Difference]: Finished difference Result 2485 states and 7566 transitions. [2021-11-12 22:58:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:38,847 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:38,851 INFO L225 Difference]: With dead ends: 2485 [2021-11-12 22:58:38,851 INFO L226 Difference]: Without dead ends: 2456 [2021-11-12 22:58:38,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:38,852 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 202 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 900.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1040.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:38,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 36 Invalid, 1133 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [33 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1040.43ms Time] [2021-11-12 22:58:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2021-11-12 22:58:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 1346. [2021-11-12 22:58:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.3732342007434943) internal successors, (4537), 1345 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4537 transitions. [2021-11-12 22:58:38,882 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4537 transitions. Word has length 33 [2021-11-12 22:58:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:38,882 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4537 transitions. [2021-11-12 22:58:38,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4537 transitions. [2021-11-12 22:58:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:38,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:38,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:38,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-12 22:58:38,886 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1129632305, now seen corresponding path program 75 times [2021-11-12 22:58:38,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:38,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583864111] [2021-11-12 22:58:38,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:38,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:39,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:39,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583864111] [2021-11-12 22:58:39,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583864111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:39,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:39,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:39,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089032699] [2021-11-12 22:58:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:39,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:39,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:39,785 INFO L87 Difference]: Start difference. First operand 1346 states and 4537 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:41,502 INFO L93 Difference]: Finished difference Result 2523 states and 7626 transitions. [2021-11-12 22:58:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:41,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:41,507 INFO L225 Difference]: With dead ends: 2523 [2021-11-12 22:58:41,507 INFO L226 Difference]: Without dead ends: 2510 [2021-11-12 22:58:41,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:41,508 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 236 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 993.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.08ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1149.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:41,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 37 Invalid, 1316 Unknown, 0 Unchecked, 5.08ms Time], IncrementalHoareTripleChecker [36 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1149.87ms Time] [2021-11-12 22:58:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2021-11-12 22:58:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 1350. [2021-11-12 22:58:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:58:41,545 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:58:41,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:41,546 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:58:41,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:58:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:41,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:41,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:41,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-12 22:58:41,550 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:41,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash 885435137, now seen corresponding path program 76 times [2021-11-12 22:58:41,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:41,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782477503] [2021-11-12 22:58:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:41,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:42,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:42,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782477503] [2021-11-12 22:58:42,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782477503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:42,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:42,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:42,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238895800] [2021-11-12 22:58:42,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:42,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:42,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:42,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:42,413 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:44,044 INFO L93 Difference]: Finished difference Result 2541 states and 7650 transitions. [2021-11-12 22:58:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:44,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:44,049 INFO L225 Difference]: With dead ends: 2541 [2021-11-12 22:58:44,049 INFO L226 Difference]: Without dead ends: 2530 [2021-11-12 22:58:44,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:44,050 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 264 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 948.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.97ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1097.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:44,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 44 Invalid, 1250 Unknown, 0 Unchecked, 4.97ms Time], IncrementalHoareTripleChecker [37 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1097.28ms Time] [2021-11-12 22:58:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-12 22:58:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1352. [2021-11-12 22:58:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:58:44,088 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:58:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:44,088 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:58:44,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:58:44,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:44,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:44,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:44,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-12 22:58:44,091 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:44,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:44,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1420664939, now seen corresponding path program 77 times [2021-11-12 22:58:44,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:44,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886391625] [2021-11-12 22:58:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:44,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:45,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:45,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886391625] [2021-11-12 22:58:45,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886391625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:45,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:45,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:45,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066013760] [2021-11-12 22:58:45,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:45,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:45,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:45,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:45,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:45,105 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:46,807 INFO L93 Difference]: Finished difference Result 2529 states and 7636 transitions. [2021-11-12 22:58:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:46,808 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:46,812 INFO L225 Difference]: With dead ends: 2529 [2021-11-12 22:58:46,813 INFO L226 Difference]: Without dead ends: 2508 [2021-11-12 22:58:46,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:46,813 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 227 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 956.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.98ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1109.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:46,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 43 Invalid, 1244 Unknown, 0 Unchecked, 4.98ms Time], IncrementalHoareTripleChecker [37 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1109.03ms Time] [2021-11-12 22:58:46,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2021-11-12 22:58:46,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 1348. [2021-11-12 22:58:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3719376391982183) internal successors, (4542), 1347 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4542 transitions. [2021-11-12 22:58:46,861 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4542 transitions. Word has length 33 [2021-11-12 22:58:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:46,861 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4542 transitions. [2021-11-12 22:58:46,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4542 transitions. [2021-11-12 22:58:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:46,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:46,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:46,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-12 22:58:46,866 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash 995608201, now seen corresponding path program 78 times [2021-11-12 22:58:46,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:46,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347193751] [2021-11-12 22:58:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:46,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:47,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:47,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347193751] [2021-11-12 22:58:47,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347193751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:47,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:47,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:47,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283926611] [2021-11-12 22:58:47,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:47,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:47,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:47,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:47,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:47,741 INFO L87 Difference]: Start difference. First operand 1348 states and 4542 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:49,510 INFO L93 Difference]: Finished difference Result 2497 states and 7584 transitions. [2021-11-12 22:58:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:49,510 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:49,516 INFO L225 Difference]: With dead ends: 2497 [2021-11-12 22:58:49,516 INFO L226 Difference]: Without dead ends: 2484 [2021-11-12 22:58:49,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:49,516 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 234 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1051.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1213.37ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:49,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 35 Invalid, 1326 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [35 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1213.37ms Time] [2021-11-12 22:58:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-11-12 22:58:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1350. [2021-11-12 22:58:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 22:58:49,554 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 22:58:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:49,554 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 22:58:49,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 22:58:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:49,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:49,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:49,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-12 22:58:49,558 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:49,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1192574975, now seen corresponding path program 79 times [2021-11-12 22:58:49,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:49,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061994932] [2021-11-12 22:58:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:49,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:50,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:50,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061994932] [2021-11-12 22:58:50,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061994932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:50,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:50,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:50,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932786280] [2021-11-12 22:58:50,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:50,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:50,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:50,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:50,752 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:52,545 INFO L93 Difference]: Finished difference Result 2501 states and 7592 transitions. [2021-11-12 22:58:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:52,546 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:52,551 INFO L225 Difference]: With dead ends: 2501 [2021-11-12 22:58:52,551 INFO L226 Difference]: Without dead ends: 2490 [2021-11-12 22:58:52,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:52,552 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 240 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1039.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.08ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1199.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:52,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 37 Invalid, 1298 Unknown, 0 Unchecked, 5.08ms Time], IncrementalHoareTripleChecker [35 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1199.18ms Time] [2021-11-12 22:58:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-11-12 22:58:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1352. [2021-11-12 22:58:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.36639526276832) internal successors, (4548), 1351 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4548 transitions. [2021-11-12 22:58:52,587 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4548 transitions. Word has length 33 [2021-11-12 22:58:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:52,587 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4548 transitions. [2021-11-12 22:58:52,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4548 transitions. [2021-11-12 22:58:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:52,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:52,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:52,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-12 22:58:52,590 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1496702915, now seen corresponding path program 80 times [2021-11-12 22:58:52,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:52,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184239090] [2021-11-12 22:58:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:52,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:53,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:53,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184239090] [2021-11-12 22:58:53,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184239090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:53,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:53,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:53,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178190602] [2021-11-12 22:58:53,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:53,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:53,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:53,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:53,573 INFO L87 Difference]: Start difference. First operand 1352 states and 4548 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:55,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:55,332 INFO L93 Difference]: Finished difference Result 2489 states and 7578 transitions. [2021-11-12 22:58:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:55,332 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:55,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:55,337 INFO L225 Difference]: With dead ends: 2489 [2021-11-12 22:58:55,337 INFO L226 Difference]: Without dead ends: 2470 [2021-11-12 22:58:55,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:55,338 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1018.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1178.30ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:55,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 38 Invalid, 1321 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [34 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1178.30ms Time] [2021-11-12 22:58:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-11-12 22:58:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1348. [2021-11-12 22:58:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.370452858203415) internal successors, (4540), 1347 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4540 transitions. [2021-11-12 22:58:55,373 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4540 transitions. Word has length 33 [2021-11-12 22:58:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:55,373 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4540 transitions. [2021-11-12 22:58:55,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4540 transitions. [2021-11-12 22:58:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:55,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:55,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:55,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-12 22:58:55,378 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:55,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1771233417, now seen corresponding path program 81 times [2021-11-12 22:58:55,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:55,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686037396] [2021-11-12 22:58:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:55,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:56,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:56,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686037396] [2021-11-12 22:58:56,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686037396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:56,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:56,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:56,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201355436] [2021-11-12 22:58:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:56,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:56,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:56,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:56,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:56,313 INFO L87 Difference]: Start difference. First operand 1348 states and 4540 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:57,957 INFO L93 Difference]: Finished difference Result 2529 states and 7643 transitions. [2021-11-12 22:58:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:58:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:58:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:57,963 INFO L225 Difference]: With dead ends: 2529 [2021-11-12 22:58:57,963 INFO L226 Difference]: Without dead ends: 2518 [2021-11-12 22:58:57,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:58:57,964 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 250 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 943.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.97ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1093.55ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:57,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 39 Invalid, 1201 Unknown, 0 Unchecked, 4.97ms Time], IncrementalHoareTripleChecker [39 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 1093.55ms Time] [2021-11-12 22:58:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-12 22:58:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1352. [2021-11-12 22:58:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:58,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:58:58,002 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:58:58,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:58,002 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:58:58,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:58:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:58:58,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:58:58,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:58,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:58,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-12 22:58:58,007 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:58:58,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1988504077, now seen corresponding path program 82 times [2021-11-12 22:58:58,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:58:58,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495324160] [2021-11-12 22:58:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:58,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:58:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:58,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:58:58,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495324160] [2021-11-12 22:58:58,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495324160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:58,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:58,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:58:58,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619675909] [2021-11-12 22:58:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:58,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:58:58,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:58:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:58:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:58:58,976 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:00,718 INFO L93 Difference]: Finished difference Result 2535 states and 7653 transitions. [2021-11-12 22:59:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:00,719 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:00,724 INFO L225 Difference]: With dead ends: 2535 [2021-11-12 22:59:00,724 INFO L226 Difference]: Without dead ends: 2516 [2021-11-12 22:59:00,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:00,725 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 230 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1002.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1161.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:00,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 42 Invalid, 1288 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [40 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1161.84ms Time] [2021-11-12 22:59:00,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-11-12 22:59:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1350. [2021-11-12 22:59:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 22:59:00,764 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 22:59:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:00,765 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 22:59:00,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:00,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 22:59:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:00,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:00,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:00,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-12 22:59:00,768 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -172752591, now seen corresponding path program 83 times [2021-11-12 22:59:00,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:00,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962240358] [2021-11-12 22:59:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:00,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:01,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:01,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962240358] [2021-11-12 22:59:01,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962240358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:01,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:01,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:01,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830537123] [2021-11-12 22:59:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:01,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:01,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:01,800 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:03,663 INFO L93 Difference]: Finished difference Result 2525 states and 7633 transitions. [2021-11-12 22:59:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:03,668 INFO L225 Difference]: With dead ends: 2525 [2021-11-12 22:59:03,669 INFO L226 Difference]: Without dead ends: 2514 [2021-11-12 22:59:03,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:03,669 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 234 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1110.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.42ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1285.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:03,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 40 Invalid, 1392 Unknown, 0 Unchecked, 5.42ms Time], IncrementalHoareTripleChecker [39 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1285.44ms Time] [2021-11-12 22:59:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-11-12 22:59:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1352. [2021-11-12 22:59:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.36639526276832) internal successors, (4548), 1351 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4548 transitions. [2021-11-12 22:59:03,723 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4548 transitions. Word has length 33 [2021-11-12 22:59:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:03,723 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4548 transitions. [2021-11-12 22:59:03,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4548 transitions. [2021-11-12 22:59:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:03,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:03,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:03,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-12 22:59:03,728 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1778441997, now seen corresponding path program 84 times [2021-11-12 22:59:03,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:03,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811656567] [2021-11-12 22:59:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:03,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:04,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:04,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811656567] [2021-11-12 22:59:04,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811656567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:04,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:04,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:04,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996972326] [2021-11-12 22:59:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:04,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:04,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:04,778 INFO L87 Difference]: Start difference. First operand 1352 states and 4548 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:06,569 INFO L93 Difference]: Finished difference Result 2519 states and 7630 transitions. [2021-11-12 22:59:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:06,575 INFO L225 Difference]: With dead ends: 2519 [2021-11-12 22:59:06,575 INFO L226 Difference]: Without dead ends: 2502 [2021-11-12 22:59:06,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:06,576 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 229 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 998.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.06ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1155.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:06,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 38 Invalid, 1277 Unknown, 0 Unchecked, 5.06ms Time], IncrementalHoareTripleChecker [38 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1155.82ms Time] [2021-11-12 22:59:06,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-11-12 22:59:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1350. [2021-11-12 22:59:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3676797627872497) internal successors, (4543), 1349 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4543 transitions. [2021-11-12 22:59:06,612 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4543 transitions. Word has length 33 [2021-11-12 22:59:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:06,612 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4543 transitions. [2021-11-12 22:59:06,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4543 transitions. [2021-11-12 22:59:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:06,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:06,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:06,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-12 22:59:06,615 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash -225268111, now seen corresponding path program 85 times [2021-11-12 22:59:06,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:06,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22479159] [2021-11-12 22:59:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:06,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:07,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:07,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22479159] [2021-11-12 22:59:07,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22479159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:07,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:07,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:07,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065874127] [2021-11-12 22:59:07,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:07,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:07,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:07,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:07,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:07,425 INFO L87 Difference]: Start difference. First operand 1350 states and 4543 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:09,034 INFO L93 Difference]: Finished difference Result 2511 states and 7614 transitions. [2021-11-12 22:59:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:09,035 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:09,039 INFO L225 Difference]: With dead ends: 2511 [2021-11-12 22:59:09,039 INFO L226 Difference]: Without dead ends: 2494 [2021-11-12 22:59:09,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:09,039 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 241 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 887.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1028.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:09,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 35 Invalid, 1179 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [36 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 1028.05ms Time] [2021-11-12 22:59:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2021-11-12 22:59:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 1356. [2021-11-12 22:59:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.360885608856089) internal successors, (4554), 1355 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4554 transitions. [2021-11-12 22:59:09,068 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4554 transitions. Word has length 33 [2021-11-12 22:59:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:09,069 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4554 transitions. [2021-11-12 22:59:09,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4554 transitions. [2021-11-12 22:59:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:09,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:09,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:09,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-12 22:59:09,071 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1928779977, now seen corresponding path program 86 times [2021-11-12 22:59:09,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:09,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516101046] [2021-11-12 22:59:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:09,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:09,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:09,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516101046] [2021-11-12 22:59:09,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516101046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:09,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:09,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:09,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305677752] [2021-11-12 22:59:09,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:09,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:09,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:09,808 INFO L87 Difference]: Start difference. First operand 1356 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:11,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:11,231 INFO L93 Difference]: Finished difference Result 2493 states and 7584 transitions. [2021-11-12 22:59:11,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:11,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:11,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:11,237 INFO L225 Difference]: With dead ends: 2493 [2021-11-12 22:59:11,237 INFO L226 Difference]: Without dead ends: 2468 [2021-11-12 22:59:11,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:11,240 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 207 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 785.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 911.48ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:11,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 31 Invalid, 1238 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [35 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 911.48ms Time] [2021-11-12 22:59:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2021-11-12 22:59:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 1346. [2021-11-12 22:59:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.3717472118959106) internal successors, (4535), 1345 states have internal predecessors, (4535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4535 transitions. [2021-11-12 22:59:11,276 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4535 transitions. Word has length 33 [2021-11-12 22:59:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:11,276 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4535 transitions. [2021-11-12 22:59:11,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4535 transitions. [2021-11-12 22:59:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:11,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:11,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:11,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-12 22:59:11,279 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -186757695, now seen corresponding path program 87 times [2021-11-12 22:59:11,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:11,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691908409] [2021-11-12 22:59:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:11,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:12,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:12,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691908409] [2021-11-12 22:59:12,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691908409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:12,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:12,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:12,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523408251] [2021-11-12 22:59:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:12,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:12,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:12,233 INFO L87 Difference]: Start difference. First operand 1346 states and 4535 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:13,676 INFO L93 Difference]: Finished difference Result 2529 states and 7642 transitions. [2021-11-12 22:59:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:13,681 INFO L225 Difference]: With dead ends: 2529 [2021-11-12 22:59:13,681 INFO L226 Difference]: Without dead ends: 2518 [2021-11-12 22:59:13,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:13,682 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 243 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 826.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 957.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:13,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 43 Invalid, 1188 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [38 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 957.23ms Time] [2021-11-12 22:59:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-12 22:59:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1352. [2021-11-12 22:59:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:59:13,713 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:59:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:13,713 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:59:13,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:59:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:13,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:13,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:13,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-12 22:59:13,716 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash 348472107, now seen corresponding path program 88 times [2021-11-12 22:59:13,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:13,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463704601] [2021-11-12 22:59:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:13,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:14,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:14,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463704601] [2021-11-12 22:59:14,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463704601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:14,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:14,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:14,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868445535] [2021-11-12 22:59:14,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:14,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:14,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:14,563 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:16,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:16,093 INFO L93 Difference]: Finished difference Result 2535 states and 7652 transitions. [2021-11-12 22:59:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:16,094 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:16,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:16,099 INFO L225 Difference]: With dead ends: 2535 [2021-11-12 22:59:16,099 INFO L226 Difference]: Without dead ends: 2516 [2021-11-12 22:59:16,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:16,100 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 221 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 899.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1042.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:16,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 47 Invalid, 1279 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [38 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1042.04ms Time] [2021-11-12 22:59:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-11-12 22:59:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1350. [2021-11-12 22:59:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 22:59:16,134 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 22:59:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:16,134 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 22:59:16,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:16,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 22:59:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:16,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:16,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:16,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-12 22:59:16,137 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1008720961, now seen corresponding path program 89 times [2021-11-12 22:59:16,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:16,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024059291] [2021-11-12 22:59:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:16,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:16,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:16,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024059291] [2021-11-12 22:59:16,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024059291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:16,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:16,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:16,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761736725] [2021-11-12 22:59:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:16,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:16,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:16,978 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:18,502 INFO L93 Difference]: Finished difference Result 2541 states and 7662 transitions. [2021-11-12 22:59:18,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:18,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:18,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:18,508 INFO L225 Difference]: With dead ends: 2541 [2021-11-12 22:59:18,508 INFO L226 Difference]: Without dead ends: 2514 [2021-11-12 22:59:18,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:18,508 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 236 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 854.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.96ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 996.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:18,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 41 Invalid, 1368 Unknown, 0 Unchecked, 4.96ms Time], IncrementalHoareTripleChecker [37 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 996.79ms Time] [2021-11-12 22:59:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-11-12 22:59:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1348. [2021-11-12 22:59:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.370452858203415) internal successors, (4540), 1347 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4540 transitions. [2021-11-12 22:59:18,557 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4540 transitions. Word has length 33 [2021-11-12 22:59:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:18,557 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4540 transitions. [2021-11-12 22:59:18,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4540 transitions. [2021-11-12 22:59:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:18,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:18,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:18,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-12 22:59:18,560 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -341195213, now seen corresponding path program 90 times [2021-11-12 22:59:18,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:18,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751100516] [2021-11-12 22:59:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:18,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:19,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:19,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751100516] [2021-11-12 22:59:19,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751100516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:19,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:19,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:19,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925800029] [2021-11-12 22:59:19,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:19,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:19,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:19,463 INFO L87 Difference]: Start difference. First operand 1348 states and 4540 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:21,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:21,023 INFO L93 Difference]: Finished difference Result 2543 states and 7655 transitions. [2021-11-12 22:59:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:21,023 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:21,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:21,027 INFO L225 Difference]: With dead ends: 2543 [2021-11-12 22:59:21,027 INFO L226 Difference]: Without dead ends: 2532 [2021-11-12 22:59:21,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:21,028 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 245 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 881.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1023.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:21,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 46 Invalid, 1301 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [37 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1023.80ms Time] [2021-11-12 22:59:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-11-12 22:59:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1352. [2021-11-12 22:59:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:59:21,059 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:59:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:21,060 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:59:21,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:21,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:59:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:21,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:21,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:21,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-12 22:59:21,062 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash 194034589, now seen corresponding path program 91 times [2021-11-12 22:59:21,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:21,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405420869] [2021-11-12 22:59:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:21,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:21,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:21,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405420869] [2021-11-12 22:59:21,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405420869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:21,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:21,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:21,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817975961] [2021-11-12 22:59:21,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:21,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:21,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:21,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:21,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:21,876 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:23,426 INFO L93 Difference]: Finished difference Result 2549 states and 7665 transitions. [2021-11-12 22:59:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:23,427 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:23,431 INFO L225 Difference]: With dead ends: 2549 [2021-11-12 22:59:23,431 INFO L226 Difference]: Without dead ends: 2530 [2021-11-12 22:59:23,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:23,431 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 259 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 856.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1010.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:23,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 44 Invalid, 1208 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [37 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1010.71ms Time] [2021-11-12 22:59:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-12 22:59:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1350. [2021-11-12 22:59:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 22:59:23,476 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 22:59:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:23,477 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 22:59:23,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 22:59:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:23,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:23,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:23,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-12 22:59:23,481 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:23,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2009786075, now seen corresponding path program 92 times [2021-11-12 22:59:23,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:23,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004879552] [2021-11-12 22:59:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:23,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:24,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:24,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004879552] [2021-11-12 22:59:24,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004879552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:24,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:24,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:24,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203788797] [2021-11-12 22:59:24,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:24,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:24,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:24,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:24,522 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:26,269 INFO L93 Difference]: Finished difference Result 2521 states and 7621 transitions. [2021-11-12 22:59:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:26,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:26,274 INFO L225 Difference]: With dead ends: 2521 [2021-11-12 22:59:26,274 INFO L226 Difference]: Without dead ends: 2510 [2021-11-12 22:59:26,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:26,275 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 250 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1001.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1157.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:26,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 43 Invalid, 1268 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [37 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1157.60ms Time] [2021-11-12 22:59:26,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2021-11-12 22:59:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 1352. [2021-11-12 22:59:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.36639526276832) internal successors, (4548), 1351 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4548 transitions. [2021-11-12 22:59:26,311 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4548 transitions. Word has length 33 [2021-11-12 22:59:26,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:26,311 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4548 transitions. [2021-11-12 22:59:26,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4548 transitions. [2021-11-12 22:59:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:26,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:26,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:26,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-12 22:59:26,314 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:26,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash 404096669, now seen corresponding path program 93 times [2021-11-12 22:59:26,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:26,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257385277] [2021-11-12 22:59:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:26,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:27,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:27,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257385277] [2021-11-12 22:59:27,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257385277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:27,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:27,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:27,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397479007] [2021-11-12 22:59:27,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:27,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:27,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:27,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:27,218 INFO L87 Difference]: Start difference. First operand 1352 states and 4548 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:29,017 INFO L93 Difference]: Finished difference Result 2515 states and 7618 transitions. [2021-11-12 22:59:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:29,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:29,022 INFO L225 Difference]: With dead ends: 2515 [2021-11-12 22:59:29,022 INFO L226 Difference]: Without dead ends: 2498 [2021-11-12 22:59:29,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:29,023 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1030.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.44ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1191.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:29,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 44 Invalid, 1330 Unknown, 0 Unchecked, 5.44ms Time], IncrementalHoareTripleChecker [36 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1191.85ms Time] [2021-11-12 22:59:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2021-11-12 22:59:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 1350. [2021-11-12 22:59:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3676797627872497) internal successors, (4543), 1349 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4543 transitions. [2021-11-12 22:59:29,057 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4543 transitions. Word has length 33 [2021-11-12 22:59:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:29,057 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4543 transitions. [2021-11-12 22:59:29,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4543 transitions. [2021-11-12 22:59:29,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:29,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:29,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:29,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-12 22:59:29,060 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:29,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1957270555, now seen corresponding path program 94 times [2021-11-12 22:59:29,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:29,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31290538] [2021-11-12 22:59:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:29,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:30,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:30,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31290538] [2021-11-12 22:59:30,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31290538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:30,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:30,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:30,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576448002] [2021-11-12 22:59:30,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:30,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:30,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:30,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:30,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:30,152 INFO L87 Difference]: Start difference. First operand 1350 states and 4543 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:31,900 INFO L93 Difference]: Finished difference Result 2537 states and 7654 transitions. [2021-11-12 22:59:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:31,905 INFO L225 Difference]: With dead ends: 2537 [2021-11-12 22:59:31,905 INFO L226 Difference]: Without dead ends: 2520 [2021-11-12 22:59:31,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:31,906 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 240 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1016.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1175.92ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:31,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 44 Invalid, 1292 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [38 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 1175.92ms Time] [2021-11-12 22:59:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2021-11-12 22:59:31,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1356. [2021-11-12 22:59:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.360885608856089) internal successors, (4554), 1355 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4554 transitions. [2021-11-12 22:59:31,940 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4554 transitions. Word has length 33 [2021-11-12 22:59:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:31,940 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4554 transitions. [2021-11-12 22:59:31,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4554 transitions. [2021-11-12 22:59:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:31,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:31,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:31,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-12 22:59:31,944 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:31,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash -183648653, now seen corresponding path program 95 times [2021-11-12 22:59:31,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:31,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281113947] [2021-11-12 22:59:31,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:31,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:32,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:32,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281113947] [2021-11-12 22:59:32,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281113947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:32,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:32,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:32,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442151026] [2021-11-12 22:59:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:32,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:32,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:32,866 INFO L87 Difference]: Start difference. First operand 1356 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:34,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:34,515 INFO L93 Difference]: Finished difference Result 2519 states and 7624 transitions. [2021-11-12 22:59:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:34,521 INFO L225 Difference]: With dead ends: 2519 [2021-11-12 22:59:34,521 INFO L226 Difference]: Without dead ends: 2496 [2021-11-12 22:59:34,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:34,521 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 229 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 939.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1087.22ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:34,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 35 Invalid, 1220 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [37 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1087.22ms Time] [2021-11-12 22:59:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-11-12 22:59:34,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1348. [2021-11-12 22:59:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3689680772086117) internal successors, (4538), 1347 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4538 transitions. [2021-11-12 22:59:34,555 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4538 transitions. Word has length 33 [2021-11-12 22:59:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:34,555 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4538 transitions. [2021-11-12 22:59:34,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4538 transitions. [2021-11-12 22:59:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:34,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:34,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:34,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-12 22:59:34,558 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash -165538941, now seen corresponding path program 96 times [2021-11-12 22:59:34,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:34,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440268384] [2021-11-12 22:59:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:34,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:35,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:35,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440268384] [2021-11-12 22:59:35,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440268384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:35,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:35,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:35,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100357557] [2021-11-12 22:59:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:35,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:35,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:35,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:35,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:35,468 INFO L87 Difference]: Start difference. First operand 1348 states and 4538 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:37,328 INFO L93 Difference]: Finished difference Result 2507 states and 7601 transitions. [2021-11-12 22:59:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:37,333 INFO L225 Difference]: With dead ends: 2507 [2021-11-12 22:59:37,333 INFO L226 Difference]: Without dead ends: 2482 [2021-11-12 22:59:37,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:37,334 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1069.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1235.95ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:37,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 41 Invalid, 1387 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [35 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1235.95ms Time] [2021-11-12 22:59:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2021-11-12 22:59:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1354. [2021-11-12 22:59:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.362158167036216) internal successors, (4549), 1353 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4549 transitions. [2021-11-12 22:59:37,368 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4549 transitions. Word has length 33 [2021-11-12 22:59:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:37,368 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4549 transitions. [2021-11-12 22:59:37,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:37,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4549 transitions. [2021-11-12 22:59:37,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:37,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:37,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:37,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-12 22:59:37,373 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:37,373 INFO L85 PathProgramCache]: Analyzing trace with hash 851976641, now seen corresponding path program 97 times [2021-11-12 22:59:37,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:37,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453490500] [2021-11-12 22:59:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:37,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:38,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:38,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453490500] [2021-11-12 22:59:38,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453490500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:38,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:38,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:38,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360871027] [2021-11-12 22:59:38,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:38,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:38,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:38,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:38,329 INFO L87 Difference]: Start difference. First operand 1354 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:40,161 INFO L93 Difference]: Finished difference Result 2497 states and 7576 transitions. [2021-11-12 22:59:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:40,167 INFO L225 Difference]: With dead ends: 2497 [2021-11-12 22:59:40,167 INFO L226 Difference]: Without dead ends: 2480 [2021-11-12 22:59:40,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:40,168 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 190 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1073.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.27ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1244.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:40,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 47 Invalid, 1469 Unknown, 0 Unchecked, 5.27ms Time], IncrementalHoareTripleChecker [35 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 1244.10ms Time] [2021-11-12 22:59:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2021-11-12 22:59:40,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1360. [2021-11-12 22:59:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.355408388520971) internal successors, (4560), 1359 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4560 transitions. [2021-11-12 22:59:40,203 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4560 transitions. Word has length 33 [2021-11-12 22:59:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:40,203 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4560 transitions. [2021-11-12 22:59:40,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4560 transitions. [2021-11-12 22:59:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:40,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:40,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:40,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-12 22:59:40,206 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1433842583, now seen corresponding path program 98 times [2021-11-12 22:59:40,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:40,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253559326] [2021-11-12 22:59:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:40,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:41,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:41,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253559326] [2021-11-12 22:59:41,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253559326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:41,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:41,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:41,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015564951] [2021-11-12 22:59:41,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:41,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:41,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:41,153 INFO L87 Difference]: Start difference. First operand 1360 states and 4560 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:42,832 INFO L93 Difference]: Finished difference Result 2479 states and 7546 transitions. [2021-11-12 22:59:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:42,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:42,837 INFO L225 Difference]: With dead ends: 2479 [2021-11-12 22:59:42,837 INFO L226 Difference]: Without dead ends: 2448 [2021-11-12 22:59:42,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:42,838 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 187 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1001.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1161.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:42,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 38 Invalid, 1394 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [34 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1161.15ms Time] [2021-11-12 22:59:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-11-12 22:59:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 1344. [2021-11-12 22:59:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.3730454206999254) internal successors, (4530), 1343 states have internal predecessors, (4530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4530 transitions. [2021-11-12 22:59:42,866 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4530 transitions. Word has length 33 [2021-11-12 22:59:42,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:42,866 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 4530 transitions. [2021-11-12 22:59:42,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4530 transitions. [2021-11-12 22:59:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:42,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:42,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:42,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-12 22:59:42,868 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -713734977, now seen corresponding path program 99 times [2021-11-12 22:59:42,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:42,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345041997] [2021-11-12 22:59:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:42,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:43,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:43,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345041997] [2021-11-12 22:59:43,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345041997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:43,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:43,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:43,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061913129] [2021-11-12 22:59:43,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:43,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:43,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:43,677 INFO L87 Difference]: Start difference. First operand 1344 states and 4530 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:45,167 INFO L93 Difference]: Finished difference Result 2541 states and 7693 transitions. [2021-11-12 22:59:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:45,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:45,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:45,172 INFO L225 Difference]: With dead ends: 2541 [2021-11-12 22:59:45,172 INFO L226 Difference]: Without dead ends: 2530 [2021-11-12 22:59:45,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:45,173 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 206 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 884.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.77ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1022.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:45,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 52 Invalid, 1415 Unknown, 0 Unchecked, 4.77ms Time], IncrementalHoareTripleChecker [34 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1022.87ms Time] [2021-11-12 22:59:45,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-11-12 22:59:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1352. [2021-11-12 22:59:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:59:45,204 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:59:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:45,204 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:59:45,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:59:45,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:45,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:45,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:45,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-12 22:59:45,206 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1975542913, now seen corresponding path program 100 times [2021-11-12 22:59:45,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:45,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578274641] [2021-11-12 22:59:45,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:45,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:46,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:46,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578274641] [2021-11-12 22:59:46,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578274641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:46,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:46,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:46,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559487817] [2021-11-12 22:59:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:46,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:46,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:46,032 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:47,710 INFO L93 Difference]: Finished difference Result 2545 states and 7699 transitions. [2021-11-12 22:59:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:47,710 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:47,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:47,715 INFO L225 Difference]: With dead ends: 2545 [2021-11-12 22:59:47,715 INFO L226 Difference]: Without dead ends: 2528 [2021-11-12 22:59:47,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:47,716 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 974.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.32ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1124.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:47,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 45 Invalid, 1269 Unknown, 0 Unchecked, 5.32ms Time], IncrementalHoareTripleChecker [34 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1124.51ms Time] [2021-11-12 22:59:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-11-12 22:59:47,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1350. [2021-11-12 22:59:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:59:47,775 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:59:47,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:47,776 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:59:47,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:59:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:47,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:47,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:47,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-12 22:59:47,778 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash -524244279, now seen corresponding path program 101 times [2021-11-12 22:59:47,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:47,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530496153] [2021-11-12 22:59:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:47,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:48,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:48,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530496153] [2021-11-12 22:59:48,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530496153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:48,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:48,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:48,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484782404] [2021-11-12 22:59:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:48,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:48,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:48,686 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:50,403 INFO L93 Difference]: Finished difference Result 2549 states and 7705 transitions. [2021-11-12 22:59:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:50,404 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:50,408 INFO L225 Difference]: With dead ends: 2549 [2021-11-12 22:59:50,408 INFO L226 Difference]: Without dead ends: 2526 [2021-11-12 22:59:50,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:50,409 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 215 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1026.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.43ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1186.89ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:50,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 47 Invalid, 1356 Unknown, 0 Unchecked, 5.43ms Time], IncrementalHoareTripleChecker [33 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1186.89ms Time] [2021-11-12 22:59:50,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-12 22:59:50,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1348. [2021-11-12 22:59:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3719376391982183) internal successors, (4542), 1347 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4542 transitions. [2021-11-12 22:59:50,442 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4542 transitions. Word has length 33 [2021-11-12 22:59:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:50,442 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4542 transitions. [2021-11-12 22:59:50,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4542 transitions. [2021-11-12 22:59:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:50,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:50,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:50,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-12 22:59:50,445 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:50,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:50,445 INFO L85 PathProgramCache]: Analyzing trace with hash -427734839, now seen corresponding path program 102 times [2021-11-12 22:59:50,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:50,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645301813] [2021-11-12 22:59:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:50,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:51,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:51,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645301813] [2021-11-12 22:59:51,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645301813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:51,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:51,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:51,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692496136] [2021-11-12 22:59:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:51,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:51,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:51,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:51,289 INFO L87 Difference]: Start difference. First operand 1348 states and 4542 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:52,899 INFO L93 Difference]: Finished difference Result 2569 states and 7742 transitions. [2021-11-12 22:59:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:52,899 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:52,904 INFO L225 Difference]: With dead ends: 2569 [2021-11-12 22:59:52,904 INFO L226 Difference]: Without dead ends: 2558 [2021-11-12 22:59:52,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:52,905 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 862.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1001.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:52,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 44 Invalid, 1136 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [38 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1001.44ms Time] [2021-11-12 22:59:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-11-12 22:59:52,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1352. [2021-11-12 22:59:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 22:59:52,938 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 22:59:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:52,938 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 22:59:52,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 22:59:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:52,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:52,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:52,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-12 22:59:52,941 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 107494963, now seen corresponding path program 103 times [2021-11-12 22:59:52,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:52,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679429744] [2021-11-12 22:59:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:52,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:54,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:54,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679429744] [2021-11-12 22:59:54,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679429744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:54,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:54,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:54,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989623628] [2021-11-12 22:59:54,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:54,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:54,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:54,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:54,001 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:55,654 INFO L93 Difference]: Finished difference Result 2575 states and 7752 transitions. [2021-11-12 22:59:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:55,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:55,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:55,660 INFO L225 Difference]: With dead ends: 2575 [2021-11-12 22:59:55,660 INFO L226 Difference]: Without dead ends: 2556 [2021-11-12 22:59:55,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:55,661 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 255 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 902.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.98ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1050.31ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:55,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 48 Invalid, 1159 Unknown, 0 Unchecked, 4.98ms Time], IncrementalHoareTripleChecker [39 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1050.31ms Time] [2021-11-12 22:59:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-11-12 22:59:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1350. [2021-11-12 22:59:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 22:59:55,695 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 22:59:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:55,695 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 22:59:55,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:55,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 22:59:55,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:55,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:55,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:55,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-12 22:59:55,698 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1923246449, now seen corresponding path program 104 times [2021-11-12 22:59:55,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:55,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308107791] [2021-11-12 22:59:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:55,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:56,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:56,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308107791] [2021-11-12 22:59:56,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308107791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:56,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:56,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:56,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483982837] [2021-11-12 22:59:56,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:56,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:56,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:56,703 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:58,508 INFO L93 Difference]: Finished difference Result 2581 states and 7752 transitions. [2021-11-12 22:59:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:59:58,509 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 22:59:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:58,514 INFO L225 Difference]: With dead ends: 2581 [2021-11-12 22:59:58,514 INFO L226 Difference]: Without dead ends: 2570 [2021-11-12 22:59:58,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:58,515 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 225 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1080.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1247.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:58,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 48 Invalid, 1373 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [37 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1247.01ms Time] [2021-11-12 22:59:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-11-12 22:59:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1352. [2021-11-12 22:59:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 22:59:58,559 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 22:59:58,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:58,559 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 22:59:58,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:59:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 22:59:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 22:59:58,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:58,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:58,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-12 22:59:58,562 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 22:59:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash 317557043, now seen corresponding path program 105 times [2021-11-12 22:59:58,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:59:58,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279351775] [2021-11-12 22:59:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:58,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:59:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:59,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:59:59,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279351775] [2021-11-12 22:59:59,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279351775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:59,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:59,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 22:59:59,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213566585] [2021-11-12 22:59:59,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:59,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:59:59,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:59:59,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:59:59,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:59:59,368 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:01,231 INFO L93 Difference]: Finished difference Result 2575 states and 7749 transitions. [2021-11-12 23:00:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:01,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:01,237 INFO L225 Difference]: With dead ends: 2575 [2021-11-12 23:00:01,237 INFO L226 Difference]: Without dead ends: 2558 [2021-11-12 23:00:01,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:01,238 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 223 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1048.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.32ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1212.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:01,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 49 Invalid, 1332 Unknown, 0 Unchecked, 5.32ms Time], IncrementalHoareTripleChecker [37 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1212.07ms Time] [2021-11-12 23:00:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-11-12 23:00:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1350. [2021-11-12 23:00:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 23:00:01,272 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 23:00:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:01,272 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 23:00:01,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 23:00:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:01,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:01,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:01,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-12 23:00:01,275 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1870730929, now seen corresponding path program 106 times [2021-11-12 23:00:01,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:01,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240378435] [2021-11-12 23:00:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:01,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:02,280 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:02,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240378435] [2021-11-12 23:00:02,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240378435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:02,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:02,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:02,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556820128] [2021-11-12 23:00:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:02,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:02,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:02,282 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:03,897 INFO L93 Difference]: Finished difference Result 2581 states and 7765 transitions. [2021-11-12 23:00:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:03,897 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:03,903 INFO L225 Difference]: With dead ends: 2581 [2021-11-12 23:00:03,903 INFO L226 Difference]: Without dead ends: 2564 [2021-11-12 23:00:03,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:03,903 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 891.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1034.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:03,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 42 Invalid, 1154 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [37 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1034.70ms Time] [2021-11-12 23:00:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2021-11-12 23:00:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1356. [2021-11-12 23:00:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3623616236162364) internal successors, (4556), 1355 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4556 transitions. [2021-11-12 23:00:03,939 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4556 transitions. Word has length 33 [2021-11-12 23:00:03,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:03,939 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4556 transitions. [2021-11-12 23:00:03,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:03,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4556 transitions. [2021-11-12 23:00:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:03,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:03,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:03,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-12 23:00:03,942 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash -270188279, now seen corresponding path program 107 times [2021-11-12 23:00:03,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:03,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938047135] [2021-11-12 23:00:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:03,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:04,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:04,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938047135] [2021-11-12 23:00:04,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938047135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:04,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:04,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:04,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827092692] [2021-11-12 23:00:04,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:04,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:04,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:04,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:04,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:04,879 INFO L87 Difference]: Start difference. First operand 1356 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:06,516 INFO L93 Difference]: Finished difference Result 2563 states and 7735 transitions. [2021-11-12 23:00:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:06,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:06,521 INFO L225 Difference]: With dead ends: 2563 [2021-11-12 23:00:06,521 INFO L226 Difference]: Without dead ends: 2540 [2021-11-12 23:00:06,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:06,522 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 216 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 920.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.90ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1067.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:06,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 38 Invalid, 1211 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [36 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1067.86ms Time] [2021-11-12 23:00:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2021-11-12 23:00:06,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 1348. [2021-11-12 23:00:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.370452858203415) internal successors, (4540), 1347 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4540 transitions. [2021-11-12 23:00:06,558 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4540 transitions. Word has length 33 [2021-11-12 23:00:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:06,559 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4540 transitions. [2021-11-12 23:00:06,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4540 transitions. [2021-11-12 23:00:06,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:06,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:06,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:06,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-12 23:00:06,561 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1564480077, now seen corresponding path program 108 times [2021-11-12 23:00:06,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:06,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820723448] [2021-11-12 23:00:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:06,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:07,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:07,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820723448] [2021-11-12 23:00:07,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820723448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:07,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:07,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:07,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371045563] [2021-11-12 23:00:07,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:07,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:07,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:07,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:07,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:07,589 INFO L87 Difference]: Start difference. First operand 1348 states and 4540 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:09,222 INFO L93 Difference]: Finished difference Result 2583 states and 7767 transitions. [2021-11-12 23:00:09,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:09,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:09,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:09,227 INFO L225 Difference]: With dead ends: 2583 [2021-11-12 23:00:09,228 INFO L226 Difference]: Without dead ends: 2562 [2021-11-12 23:00:09,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:09,228 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 236 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 928.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1070.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:09,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 38 Invalid, 1141 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [35 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1070.88ms Time] [2021-11-12 23:00:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2021-11-12 23:00:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 1354. [2021-11-12 23:00:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3636363636363638) internal successors, (4551), 1353 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4551 transitions. [2021-11-12 23:00:09,262 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4551 transitions. Word has length 33 [2021-11-12 23:00:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:09,262 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4551 transitions. [2021-11-12 23:00:09,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4551 transitions. [2021-11-12 23:00:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:09,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:09,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:09,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-12 23:00:09,265 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:09,265 INFO L85 PathProgramCache]: Analyzing trace with hash 801281969, now seen corresponding path program 109 times [2021-11-12 23:00:09,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:09,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003627825] [2021-11-12 23:00:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:09,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:10,160 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:10,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003627825] [2021-11-12 23:00:10,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003627825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:10,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:10,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:10,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463142378] [2021-11-12 23:00:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:10,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:10,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:10,161 INFO L87 Difference]: Start difference. First operand 1354 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:11,775 INFO L93 Difference]: Finished difference Result 2585 states and 7771 transitions. [2021-11-12 23:00:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:11,781 INFO L225 Difference]: With dead ends: 2585 [2021-11-12 23:00:11,781 INFO L226 Difference]: Without dead ends: 2568 [2021-11-12 23:00:11,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:11,781 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 230 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 892.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1036.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:11,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 44 Invalid, 1156 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [35 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1036.72ms Time] [2021-11-12 23:00:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-11-12 23:00:11,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1360. [2021-11-12 23:00:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.356880058866814) internal successors, (4562), 1359 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4562 transitions. [2021-11-12 23:00:11,818 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4562 transitions. Word has length 33 [2021-11-12 23:00:11,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:11,818 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4562 transitions. [2021-11-12 23:00:11,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4562 transitions. [2021-11-12 23:00:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:11,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:11,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:11,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-12 23:00:11,821 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:11,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1355394569, now seen corresponding path program 110 times [2021-11-12 23:00:11,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:11,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808231970] [2021-11-12 23:00:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:11,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:12,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:12,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808231970] [2021-11-12 23:00:12,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808231970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:12,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:12,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:12,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544683571] [2021-11-12 23:00:12,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:12,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:12,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:12,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:12,695 INFO L87 Difference]: Start difference. First operand 1360 states and 4562 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:14,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:14,308 INFO L93 Difference]: Finished difference Result 2567 states and 7741 transitions. [2021-11-12 23:00:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:14,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:14,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:14,316 INFO L225 Difference]: With dead ends: 2567 [2021-11-12 23:00:14,317 INFO L226 Difference]: Without dead ends: 2538 [2021-11-12 23:00:14,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:14,317 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 217 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 907.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.63ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1054.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:14,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 42 Invalid, 1187 Unknown, 0 Unchecked, 4.63ms Time], IncrementalHoareTripleChecker [35 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1054.08ms Time] [2021-11-12 23:00:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-11-12 23:00:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1346. [2021-11-12 23:00:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.3717472118959106) internal successors, (4535), 1345 states have internal predecessors, (4535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4535 transitions. [2021-11-12 23:00:14,369 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4535 transitions. Word has length 33 [2021-11-12 23:00:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:14,370 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4535 transitions. [2021-11-12 23:00:14,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4535 transitions. [2021-11-12 23:00:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:14,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:14,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:14,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-12 23:00:14,374 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:14,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash 501564095, now seen corresponding path program 111 times [2021-11-12 23:00:14,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:14,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321848464] [2021-11-12 23:00:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:14,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:15,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:15,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321848464] [2021-11-12 23:00:15,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321848464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:15,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:15,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:15,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575450358] [2021-11-12 23:00:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:15,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:15,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:15,223 INFO L87 Difference]: Start difference. First operand 1346 states and 4535 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:16,842 INFO L93 Difference]: Finished difference Result 2533 states and 7672 transitions. [2021-11-12 23:00:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:16,846 INFO L225 Difference]: With dead ends: 2533 [2021-11-12 23:00:16,846 INFO L226 Difference]: Without dead ends: 2522 [2021-11-12 23:00:16,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:16,847 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 237 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 885.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1026.54ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:16,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 39 Invalid, 1133 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [36 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1026.54ms Time] [2021-11-12 23:00:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2021-11-12 23:00:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1352. [2021-11-12 23:00:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 23:00:16,874 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 23:00:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:16,874 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 23:00:16,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 23:00:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:16,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:16,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:16,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-12 23:00:16,876 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:16,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1036793897, now seen corresponding path program 112 times [2021-11-12 23:00:16,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:16,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140099189] [2021-11-12 23:00:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:16,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:17,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:17,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140099189] [2021-11-12 23:00:17,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140099189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:17,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:17,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:17,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762202398] [2021-11-12 23:00:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:17,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:17,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:17,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:17,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:17,670 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:19,013 INFO L93 Difference]: Finished difference Result 2539 states and 7682 transitions. [2021-11-12 23:00:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:19,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:19,018 INFO L225 Difference]: With dead ends: 2539 [2021-11-12 23:00:19,018 INFO L226 Difference]: Without dead ends: 2520 [2021-11-12 23:00:19,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:19,018 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 223 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 773.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.00ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 896.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:19,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 48 Invalid, 1236 Unknown, 0 Unchecked, 4.00ms Time], IncrementalHoareTripleChecker [36 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 896.89ms Time] [2021-11-12 23:00:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2021-11-12 23:00:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 1350. [2021-11-12 23:00:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 23:00:19,050 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 23:00:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:19,050 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 23:00:19,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 23:00:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:19,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:19,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:19,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-12 23:00:19,052 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1697042751, now seen corresponding path program 113 times [2021-11-12 23:00:19,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:19,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053858318] [2021-11-12 23:00:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:19,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:19,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:19,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053858318] [2021-11-12 23:00:19,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053858318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:19,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:19,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:19,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096120542] [2021-11-12 23:00:19,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:19,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:19,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:19,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:19,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:19,853 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:21,342 INFO L93 Difference]: Finished difference Result 2545 states and 7692 transitions. [2021-11-12 23:00:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:21,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:21,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:21,347 INFO L225 Difference]: With dead ends: 2545 [2021-11-12 23:00:21,348 INFO L226 Difference]: Without dead ends: 2518 [2021-11-12 23:00:21,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:21,348 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 235 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 849.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.46ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 983.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:21,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 42 Invalid, 1247 Unknown, 0 Unchecked, 4.46ms Time], IncrementalHoareTripleChecker [36 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 983.72ms Time] [2021-11-12 23:00:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2021-11-12 23:00:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1348. [2021-11-12 23:00:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.370452858203415) internal successors, (4540), 1347 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:21,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4540 transitions. [2021-11-12 23:00:21,382 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4540 transitions. Word has length 33 [2021-11-12 23:00:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:21,382 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4540 transitions. [2021-11-12 23:00:21,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4540 transitions. [2021-11-12 23:00:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:21,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:21,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:21,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-12 23:00:21,385 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:21,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash 347126577, now seen corresponding path program 114 times [2021-11-12 23:00:21,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:21,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337482444] [2021-11-12 23:00:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:21,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:22,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:22,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:22,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337482444] [2021-11-12 23:00:22,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337482444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:22,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:22,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:22,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769377425] [2021-11-12 23:00:22,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:22,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:22,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:22,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:22,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:22,348 INFO L87 Difference]: Start difference. First operand 1348 states and 4540 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:23,824 INFO L93 Difference]: Finished difference Result 2573 states and 7729 transitions. [2021-11-12 23:00:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:23,829 INFO L225 Difference]: With dead ends: 2573 [2021-11-12 23:00:23,829 INFO L226 Difference]: Without dead ends: 2562 [2021-11-12 23:00:23,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:23,830 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 273 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 837.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 972.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:23,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 42 Invalid, 1173 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [39 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 972.70ms Time] [2021-11-12 23:00:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2021-11-12 23:00:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 1352. [2021-11-12 23:00:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 23:00:23,863 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 23:00:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:23,863 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 23:00:23,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 23:00:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:23,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:23,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:23,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-12 23:00:23,866 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash 882356379, now seen corresponding path program 115 times [2021-11-12 23:00:23,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:23,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735678109] [2021-11-12 23:00:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:23,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:24,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:24,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735678109] [2021-11-12 23:00:24,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735678109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:24,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:24,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:24,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535414737] [2021-11-12 23:00:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:24,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:24,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:24,881 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:26,544 INFO L93 Difference]: Finished difference Result 2579 states and 7739 transitions. [2021-11-12 23:00:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:26,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:26,568 INFO L225 Difference]: With dead ends: 2579 [2021-11-12 23:00:26,568 INFO L226 Difference]: Without dead ends: 2560 [2021-11-12 23:00:26,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=168, Invalid=338, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:26,568 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 238 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 972.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.16ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1126.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:26,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 49 Invalid, 1330 Unknown, 0 Unchecked, 5.16ms Time], IncrementalHoareTripleChecker [39 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1126.57ms Time] [2021-11-12 23:00:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-11-12 23:00:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1350. [2021-11-12 23:00:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3691623424759083) internal successors, (4545), 1349 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4545 transitions. [2021-11-12 23:00:26,600 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4545 transitions. Word has length 33 [2021-11-12 23:00:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:26,601 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4545 transitions. [2021-11-12 23:00:26,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4545 transitions. [2021-11-12 23:00:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:26,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:26,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:26,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-12 23:00:26,603 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1596859431, now seen corresponding path program 116 times [2021-11-12 23:00:26,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:26,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952600800] [2021-11-12 23:00:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:26,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:27,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:27,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952600800] [2021-11-12 23:00:27,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952600800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:27,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:27,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:27,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976059206] [2021-11-12 23:00:27,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:27,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:27,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:27,462 INFO L87 Difference]: Start difference. First operand 1350 states and 4545 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:29,322 INFO L93 Difference]: Finished difference Result 2551 states and 7695 transitions. [2021-11-12 23:00:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:29,327 INFO L225 Difference]: With dead ends: 2551 [2021-11-12 23:00:29,328 INFO L226 Difference]: Without dead ends: 2540 [2021-11-12 23:00:29,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:29,328 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 222 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1099.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.87ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1271.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:29,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 46 Invalid, 1427 Unknown, 0 Unchecked, 5.87ms Time], IncrementalHoareTripleChecker [37 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1271.49ms Time] [2021-11-12 23:00:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2021-11-12 23:00:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 1352. [2021-11-12 23:00:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.36639526276832) internal successors, (4548), 1351 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:29,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4548 transitions. [2021-11-12 23:00:29,362 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4548 transitions. Word has length 33 [2021-11-12 23:00:29,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:29,362 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4548 transitions. [2021-11-12 23:00:29,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4548 transitions. [2021-11-12 23:00:29,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:29,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:29,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:29,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-12 23:00:29,365 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1092418459, now seen corresponding path program 117 times [2021-11-12 23:00:29,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:29,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773617826] [2021-11-12 23:00:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:29,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:30,259 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:30,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773617826] [2021-11-12 23:00:30,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773617826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:30,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:30,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:30,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39433759] [2021-11-12 23:00:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:30,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:30,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:30,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:30,260 INFO L87 Difference]: Start difference. First operand 1352 states and 4548 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:31,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:31,947 INFO L93 Difference]: Finished difference Result 2545 states and 7692 transitions. [2021-11-12 23:00:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:31,947 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:31,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:31,952 INFO L225 Difference]: With dead ends: 2545 [2021-11-12 23:00:31,952 INFO L226 Difference]: Without dead ends: 2528 [2021-11-12 23:00:31,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:31,953 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 958.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.21ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1110.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:31,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 40 Invalid, 1235 Unknown, 0 Unchecked, 5.21ms Time], IncrementalHoareTripleChecker [38 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 1110.87ms Time] [2021-11-12 23:00:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2021-11-12 23:00:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1350. [2021-11-12 23:00:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3676797627872497) internal successors, (4543), 1349 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4543 transitions. [2021-11-12 23:00:31,986 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4543 transitions. Word has length 33 [2021-11-12 23:00:31,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:31,986 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4543 transitions. [2021-11-12 23:00:31,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4543 transitions. [2021-11-12 23:00:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:31,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:31,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:31,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-12 23:00:31,989 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:31,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1649374951, now seen corresponding path program 118 times [2021-11-12 23:00:31,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:31,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040017375] [2021-11-12 23:00:31,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:31,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:32,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:32,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040017375] [2021-11-12 23:00:32,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040017375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:32,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:32,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:32,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939700715] [2021-11-12 23:00:32,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:32,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:32,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:32,848 INFO L87 Difference]: Start difference. First operand 1350 states and 4543 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:34,563 INFO L93 Difference]: Finished difference Result 2567 states and 7728 transitions. [2021-11-12 23:00:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:34,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:34,569 INFO L225 Difference]: With dead ends: 2567 [2021-11-12 23:00:34,569 INFO L226 Difference]: Without dead ends: 2550 [2021-11-12 23:00:34,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:34,570 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 235 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 944.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1096.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:34,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 40 Invalid, 1241 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [38 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1096.77ms Time] [2021-11-12 23:00:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-12 23:00:34,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1356. [2021-11-12 23:00:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.360885608856089) internal successors, (4554), 1355 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4554 transitions. [2021-11-12 23:00:34,604 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4554 transitions. Word has length 33 [2021-11-12 23:00:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:34,605 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4554 transitions. [2021-11-12 23:00:34,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4554 transitions. [2021-11-12 23:00:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:34,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:34,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:34,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-12 23:00:34,607 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:34,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:34,608 INFO L85 PathProgramCache]: Analyzing trace with hash 504673137, now seen corresponding path program 119 times [2021-11-12 23:00:34,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:34,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405806565] [2021-11-12 23:00:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:34,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:35,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:35,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405806565] [2021-11-12 23:00:35,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405806565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:35,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:35,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:35,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062415763] [2021-11-12 23:00:35,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:35,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:35,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:35,463 INFO L87 Difference]: Start difference. First operand 1356 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:37,159 INFO L93 Difference]: Finished difference Result 2549 states and 7698 transitions. [2021-11-12 23:00:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:37,159 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:37,164 INFO L225 Difference]: With dead ends: 2549 [2021-11-12 23:00:37,164 INFO L226 Difference]: Without dead ends: 2526 [2021-11-12 23:00:37,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:37,165 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 215 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 946.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.99ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1099.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:37,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 36 Invalid, 1223 Unknown, 0 Unchecked, 4.99ms Time], IncrementalHoareTripleChecker [37 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1099.42ms Time] [2021-11-12 23:00:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-12 23:00:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1348. [2021-11-12 23:00:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3689680772086117) internal successors, (4538), 1347 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4538 transitions. [2021-11-12 23:00:37,203 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4538 transitions. Word has length 33 [2021-11-12 23:00:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:37,204 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4538 transitions. [2021-11-12 23:00:37,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4538 transitions. [2021-11-12 23:00:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:37,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:37,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:37,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-12 23:00:37,206 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:37,207 INFO L85 PathProgramCache]: Analyzing trace with hash 522782849, now seen corresponding path program 120 times [2021-11-12 23:00:37,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:37,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074270642] [2021-11-12 23:00:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:37,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:38,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:38,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074270642] [2021-11-12 23:00:38,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074270642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:38,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:38,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:38,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891915176] [2021-11-12 23:00:38,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:38,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:38,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:38,174 INFO L87 Difference]: Start difference. First operand 1348 states and 4538 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:39,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:39,961 INFO L93 Difference]: Finished difference Result 2567 states and 7727 transitions. [2021-11-12 23:00:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:39,962 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:39,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:39,967 INFO L225 Difference]: With dead ends: 2567 [2021-11-12 23:00:39,967 INFO L226 Difference]: Without dead ends: 2542 [2021-11-12 23:00:39,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:39,967 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 221 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1039.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1195.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:39,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 39 Invalid, 1267 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [36 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1195.67ms Time] [2021-11-12 23:00:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2021-11-12 23:00:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1354. [2021-11-12 23:00:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.362158167036216) internal successors, (4549), 1353 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4549 transitions. [2021-11-12 23:00:40,002 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4549 transitions. Word has length 33 [2021-11-12 23:00:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:40,002 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4549 transitions. [2021-11-12 23:00:40,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4549 transitions. [2021-11-12 23:00:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:40,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:40,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:40,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-12 23:00:40,007 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1540298431, now seen corresponding path program 121 times [2021-11-12 23:00:40,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:40,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821802922] [2021-11-12 23:00:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:40,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:40,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:40,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821802922] [2021-11-12 23:00:40,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821802922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:40,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:40,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:40,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844575313] [2021-11-12 23:00:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:40,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:40,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:40,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:40,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:40,975 INFO L87 Difference]: Start difference. First operand 1354 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:42,666 INFO L93 Difference]: Finished difference Result 2557 states and 7702 transitions. [2021-11-12 23:00:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:42,667 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:42,672 INFO L225 Difference]: With dead ends: 2557 [2021-11-12 23:00:42,672 INFO L226 Difference]: Without dead ends: 2540 [2021-11-12 23:00:42,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:42,672 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 237 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 922.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.66ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1071.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:42,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 37 Invalid, 1179 Unknown, 0 Unchecked, 4.66ms Time], IncrementalHoareTripleChecker [35 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1071.96ms Time] [2021-11-12 23:00:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2021-11-12 23:00:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 1360. [2021-11-12 23:00:42,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.355408388520971) internal successors, (4560), 1359 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4560 transitions. [2021-11-12 23:00:42,705 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4560 transitions. Word has length 33 [2021-11-12 23:00:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:42,706 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4560 transitions. [2021-11-12 23:00:42,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4560 transitions. [2021-11-12 23:00:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:42,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:42,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:42,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-12 23:00:42,708 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:42,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash -745520793, now seen corresponding path program 122 times [2021-11-12 23:00:42,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:42,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668029637] [2021-11-12 23:00:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:42,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:43,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:43,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668029637] [2021-11-12 23:00:43,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668029637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:43,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:43,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:43,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978819377] [2021-11-12 23:00:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:43,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:43,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:43,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:43,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:43,724 INFO L87 Difference]: Start difference. First operand 1360 states and 4560 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:45,480 INFO L93 Difference]: Finished difference Result 2539 states and 7672 transitions. [2021-11-12 23:00:45,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:45,486 INFO L225 Difference]: With dead ends: 2539 [2021-11-12 23:00:45,486 INFO L226 Difference]: Without dead ends: 2510 [2021-11-12 23:00:45,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:45,487 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 202 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 990.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1147.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:45,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 37 Invalid, 1256 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [36 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1147.68ms Time] [2021-11-12 23:00:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2021-11-12 23:00:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 1346. [2021-11-12 23:00:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.370260223048327) internal successors, (4533), 1345 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4533 transitions. [2021-11-12 23:00:45,521 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4533 transitions. Word has length 33 [2021-11-12 23:00:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:45,521 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4533 transitions. [2021-11-12 23:00:45,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4533 transitions. [2021-11-12 23:00:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:45,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:45,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:45,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-12 23:00:45,524 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:45,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1574476105, now seen corresponding path program 123 times [2021-11-12 23:00:45,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:45,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364988053] [2021-11-12 23:00:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:45,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:46,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:46,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364988053] [2021-11-12 23:00:46,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364988053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:46,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:46,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:46,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558803694] [2021-11-12 23:00:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:46,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:46,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:46,496 INFO L87 Difference]: Start difference. First operand 1346 states and 4533 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:48,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:48,144 INFO L93 Difference]: Finished difference Result 2511 states and 7628 transitions. [2021-11-12 23:00:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:48,144 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:48,152 INFO L225 Difference]: With dead ends: 2511 [2021-11-12 23:00:48,152 INFO L226 Difference]: Without dead ends: 2490 [2021-11-12 23:00:48,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:48,153 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 199 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 943.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1098.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:48,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 35 Invalid, 1178 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [33 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1098.06ms Time] [2021-11-12 23:00:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-11-12 23:00:48,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1358. [2021-11-12 23:00:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.361090641120118) internal successors, (4561), 1357 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:48,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4561 transitions. [2021-11-12 23:00:48,205 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4561 transitions. Word has length 33 [2021-11-12 23:00:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:48,206 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4561 transitions. [2021-11-12 23:00:48,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4561 transitions. [2021-11-12 23:00:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:48,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:48,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:48,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-12 23:00:48,211 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:48,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash -634830173, now seen corresponding path program 124 times [2021-11-12 23:00:48,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:48,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195773487] [2021-11-12 23:00:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:48,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:49,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:49,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195773487] [2021-11-12 23:00:49,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195773487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:49,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:49,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:49,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053657980] [2021-11-12 23:00:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:49,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:49,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:49,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:49,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:49,234 INFO L87 Difference]: Start difference. First operand 1358 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:50,811 INFO L93 Difference]: Finished difference Result 2529 states and 7652 transitions. [2021-11-12 23:00:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:50,811 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:50,816 INFO L225 Difference]: With dead ends: 2529 [2021-11-12 23:00:50,816 INFO L226 Difference]: Without dead ends: 2512 [2021-11-12 23:00:50,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:50,816 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 205 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 905.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1049.29ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:50,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 38 Invalid, 1164 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [36 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1049.29ms Time] [2021-11-12 23:00:50,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2021-11-12 23:00:50,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1364. [2021-11-12 23:00:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 3.3543653705062364) internal successors, (4572), 1363 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4572 transitions. [2021-11-12 23:00:50,844 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4572 transitions. Word has length 33 [2021-11-12 23:00:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:50,844 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 4572 transitions. [2021-11-12 23:00:50,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4572 transitions. [2021-11-12 23:00:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:50,846 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:50,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:50,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-12 23:00:50,846 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:50,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:50,847 INFO L85 PathProgramCache]: Analyzing trace with hash -80717573, now seen corresponding path program 125 times [2021-11-12 23:00:50,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:50,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391176340] [2021-11-12 23:00:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:50,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:51,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:51,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391176340] [2021-11-12 23:00:51,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391176340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:51,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:51,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:51,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526662326] [2021-11-12 23:00:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:51,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:51,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:51,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:51,612 INFO L87 Difference]: Start difference. First operand 1364 states and 4572 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:52,975 INFO L93 Difference]: Finished difference Result 2511 states and 7622 transitions. [2021-11-12 23:00:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:52,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:52,980 INFO L225 Difference]: With dead ends: 2511 [2021-11-12 23:00:52,980 INFO L226 Difference]: Without dead ends: 2484 [2021-11-12 23:00:52,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:52,981 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 189 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 778.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.01ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 903.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:52,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 38 Invalid, 1246 Unknown, 0 Unchecked, 4.01ms Time], IncrementalHoareTripleChecker [35 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 903.53ms Time] [2021-11-12 23:00:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-11-12 23:00:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1352. [2021-11-12 23:00:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.363434492968172) internal successors, (4544), 1351 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4544 transitions. [2021-11-12 23:00:53,014 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4544 transitions. Word has length 33 [2021-11-12 23:00:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:53,015 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4544 transitions. [2021-11-12 23:00:53,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4544 transitions. [2021-11-12 23:00:53,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:53,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:53,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:53,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-12 23:00:53,017 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:53,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1806075293, now seen corresponding path program 126 times [2021-11-12 23:00:53,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:53,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527442143] [2021-11-12 23:00:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:53,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:53,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:53,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527442143] [2021-11-12 23:00:53,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527442143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:53,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:53,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:53,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795302467] [2021-11-12 23:00:53,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:53,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:53,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:53,960 INFO L87 Difference]: Start difference. First operand 1352 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:55,658 INFO L93 Difference]: Finished difference Result 2501 states and 7598 transitions. [2021-11-12 23:00:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:55,659 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:55,664 INFO L225 Difference]: With dead ends: 2501 [2021-11-12 23:00:55,664 INFO L226 Difference]: Without dead ends: 2476 [2021-11-12 23:00:55,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:55,665 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 193 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 975.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1125.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:55,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 35 Invalid, 1254 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [33 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1125.65ms Time] [2021-11-12 23:00:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-11-12 23:00:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1358. [2021-11-12 23:00:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.356669123065586) internal successors, (4555), 1357 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4555 transitions. [2021-11-12 23:00:55,699 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4555 transitions. Word has length 33 [2021-11-12 23:00:55,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:55,699 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4555 transitions. [2021-11-12 23:00:55,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:55,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4555 transitions. [2021-11-12 23:00:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:55,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:55,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:55,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-11-12 23:00:55,704 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:55,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash -946011471, now seen corresponding path program 127 times [2021-11-12 23:00:55,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:55,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266674940] [2021-11-12 23:00:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:55,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:56,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:56,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266674940] [2021-11-12 23:00:56,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266674940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:56,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:56,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:56,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988304812] [2021-11-12 23:00:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:56,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:56,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:56,608 INFO L87 Difference]: Start difference. First operand 1358 states and 4555 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:58,185 INFO L93 Difference]: Finished difference Result 2501 states and 7582 transitions. [2021-11-12 23:00:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:00:58,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:00:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:58,190 INFO L225 Difference]: With dead ends: 2501 [2021-11-12 23:00:58,190 INFO L226 Difference]: Without dead ends: 2484 [2021-11-12 23:00:58,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:58,191 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 209 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 875.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1017.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:58,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 36 Invalid, 1137 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [35 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1017.45ms Time] [2021-11-12 23:00:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-11-12 23:00:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1364. [2021-11-12 23:00:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 3.3499633162142333) internal successors, (4566), 1363 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4566 transitions. [2021-11-12 23:00:58,225 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4566 transitions. Word has length 33 [2021-11-12 23:00:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:58,226 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 4566 transitions. [2021-11-12 23:00:58,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:00:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4566 transitions. [2021-11-12 23:00:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:00:58,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:58,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:58,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-11-12 23:00:58,229 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:00:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -391898871, now seen corresponding path program 128 times [2021-11-12 23:00:58,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:00:58,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833528278] [2021-11-12 23:00:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:58,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:00:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:00:59,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:00:59,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833528278] [2021-11-12 23:00:59,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833528278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:59,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:59,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:00:59,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867169320] [2021-11-12 23:00:59,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:59,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:59,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:00:59,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:59,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:00:59,177 INFO L87 Difference]: Start difference. First operand 1364 states and 4566 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:00,772 INFO L93 Difference]: Finished difference Result 2483 states and 7552 transitions. [2021-11-12 23:01:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:00,773 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:00,778 INFO L225 Difference]: With dead ends: 2483 [2021-11-12 23:01:00,779 INFO L226 Difference]: Without dead ends: 2442 [2021-11-12 23:01:00,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:00,779 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 193 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 905.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1050.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:00,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 32 Invalid, 1204 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [33 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 1050.53ms Time] [2021-11-12 23:01:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-12 23:01:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1338. [2021-11-12 23:01:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.3784592370979807) internal successors, (4517), 1337 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 4517 transitions. [2021-11-12 23:01:00,816 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 4517 transitions. Word has length 33 [2021-11-12 23:01:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:00,817 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 4517 transitions. [2021-11-12 23:01:00,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 4517 transitions. [2021-11-12 23:01:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:00,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:00,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:00,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-11-12 23:01:00,821 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1392902635, now seen corresponding path program 129 times [2021-11-12 23:01:00,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:00,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728939908] [2021-11-12 23:01:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:00,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:01,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:01,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728939908] [2021-11-12 23:01:01,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728939908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:01,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:01,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:01,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678158376] [2021-11-12 23:01:01,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:01,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:01,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:01,646 INFO L87 Difference]: Start difference. First operand 1338 states and 4517 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:03,608 INFO L93 Difference]: Finished difference Result 2775 states and 8273 transitions. [2021-11-12 23:01:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:01:03,609 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:03,614 INFO L225 Difference]: With dead ends: 2775 [2021-11-12 23:01:03,614 INFO L226 Difference]: Without dead ends: 2764 [2021-11-12 23:01:03,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:01:03,615 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 258 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1088.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.33ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1262.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:03,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 58 Invalid, 1430 Unknown, 0 Unchecked, 6.33ms Time], IncrementalHoareTripleChecker [38 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1262.60ms Time] [2021-11-12 23:01:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-11-12 23:01:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 1354. [2021-11-12 23:01:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3725055432372506) internal successors, (4563), 1353 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4563 transitions. [2021-11-12 23:01:03,651 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4563 transitions. Word has length 33 [2021-11-12 23:01:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:03,651 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4563 transitions. [2021-11-12 23:01:03,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4563 transitions. [2021-11-12 23:01:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:03,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:03,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:03,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-11-12 23:01:03,654 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:03,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1296375255, now seen corresponding path program 130 times [2021-11-12 23:01:03,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:03,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547088503] [2021-11-12 23:01:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:03,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:04,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:04,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547088503] [2021-11-12 23:01:04,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547088503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:04,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:04,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:04,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458958657] [2021-11-12 23:01:04,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:04,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:04,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:04,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:04,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:04,599 INFO L87 Difference]: Start difference. First operand 1354 states and 4563 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:06,626 INFO L93 Difference]: Finished difference Result 2779 states and 8279 transitions. [2021-11-12 23:01:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:01:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:06,632 INFO L225 Difference]: With dead ends: 2779 [2021-11-12 23:01:06,632 INFO L226 Difference]: Without dead ends: 2762 [2021-11-12 23:01:06,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:01:06,633 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 247 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1106.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1275.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:06,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 54 Invalid, 1370 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [40 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1275.38ms Time] [2021-11-12 23:01:06,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-11-12 23:01:06,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1352. [2021-11-12 23:01:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 23:01:06,667 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 23:01:06,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:06,667 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 23:01:06,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 23:01:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:06,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:06,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:06,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-11-12 23:01:06,670 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1203411937, now seen corresponding path program 131 times [2021-11-12 23:01:06,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:06,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903745103] [2021-11-12 23:01:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:06,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:07,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:07,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903745103] [2021-11-12 23:01:07,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903745103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:07,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:07,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:07,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928482488] [2021-11-12 23:01:07,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:07,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:07,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:07,584 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:09,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:09,653 INFO L93 Difference]: Finished difference Result 2783 states and 8285 transitions. [2021-11-12 23:01:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:01:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:09,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:09,659 INFO L225 Difference]: With dead ends: 2783 [2021-11-12 23:01:09,659 INFO L226 Difference]: Without dead ends: 2760 [2021-11-12 23:01:09,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:01:09,659 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 265 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1202.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.09ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1387.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:09,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 56 Invalid, 1493 Unknown, 0 Unchecked, 6.09ms Time], IncrementalHoareTripleChecker [37 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1387.73ms Time] [2021-11-12 23:01:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-11-12 23:01:09,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1350. [2021-11-12 23:01:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.375092661230541) internal successors, (4553), 1349 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4553 transitions. [2021-11-12 23:01:09,694 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4553 transitions. Word has length 33 [2021-11-12 23:01:09,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:09,695 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4553 transitions. [2021-11-12 23:01:09,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4553 transitions. [2021-11-12 23:01:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:09,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:09,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:09,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-11-12 23:01:09,697 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:09,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1106902497, now seen corresponding path program 132 times [2021-11-12 23:01:09,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:09,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082772598] [2021-11-12 23:01:09,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:09,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:10,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:10,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082772598] [2021-11-12 23:01:10,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082772598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:10,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:10,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:10,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350492445] [2021-11-12 23:01:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:10,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:10,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:10,451 INFO L87 Difference]: Start difference. First operand 1350 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:12,647 INFO L93 Difference]: Finished difference Result 2803 states and 8322 transitions. [2021-11-12 23:01:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:01:12,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:12,653 INFO L225 Difference]: With dead ends: 2803 [2021-11-12 23:01:12,653 INFO L226 Difference]: Without dead ends: 2792 [2021-11-12 23:01:12,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:01:12,654 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 261 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1149.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.73ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1349.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:12,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 56 Invalid, 1401 Unknown, 0 Unchecked, 5.73ms Time], IncrementalHoareTripleChecker [40 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1349.79ms Time] [2021-11-12 23:01:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-11-12 23:01:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 1354. [2021-11-12 23:01:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3725055432372506) internal successors, (4563), 1353 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4563 transitions. [2021-11-12 23:01:12,690 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4563 transitions. Word has length 33 [2021-11-12 23:01:12,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:12,691 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4563 transitions. [2021-11-12 23:01:12,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4563 transitions. [2021-11-12 23:01:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:12,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:12,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:12,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-11-12 23:01:12,693 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:12,694 INFO L85 PathProgramCache]: Analyzing trace with hash -571672695, now seen corresponding path program 133 times [2021-11-12 23:01:12,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:12,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482989594] [2021-11-12 23:01:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:12,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:13,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:13,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482989594] [2021-11-12 23:01:13,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482989594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:13,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:13,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:13,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146285517] [2021-11-12 23:01:13,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:13,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:13,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:13,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:13,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:13,527 INFO L87 Difference]: Start difference. First operand 1354 states and 4563 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:15,772 INFO L93 Difference]: Finished difference Result 2817 states and 8347 transitions. [2021-11-12 23:01:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:01:15,772 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:15,780 INFO L225 Difference]: With dead ends: 2817 [2021-11-12 23:01:15,780 INFO L226 Difference]: Without dead ends: 2798 [2021-11-12 23:01:15,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:01:15,781 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 272 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1113.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1304.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:15,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 59 Invalid, 1377 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [41 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1304.08ms Time] [2021-11-12 23:01:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-12 23:01:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1352. [2021-11-12 23:01:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 23:01:15,821 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 23:01:15,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:15,822 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 23:01:15,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 23:01:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:15,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:15,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:15,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-11-12 23:01:15,826 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:15,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1244078791, now seen corresponding path program 134 times [2021-11-12 23:01:15,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:15,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391464916] [2021-11-12 23:01:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:15,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:16,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:16,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391464916] [2021-11-12 23:01:16,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391464916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:16,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:16,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:16,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716389631] [2021-11-12 23:01:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:16,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:16,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:16,719 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:18,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:18,842 INFO L93 Difference]: Finished difference Result 2815 states and 8332 transitions. [2021-11-12 23:01:18,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:01:18,843 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:18,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:18,850 INFO L225 Difference]: With dead ends: 2815 [2021-11-12 23:01:18,850 INFO L226 Difference]: Without dead ends: 2804 [2021-11-12 23:01:18,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:01:18,850 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 255 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1185.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.33ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1402.12ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:18,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 62 Invalid, 1518 Unknown, 0 Unchecked, 6.33ms Time], IncrementalHoareTripleChecker [39 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1402.12ms Time] [2021-11-12 23:01:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-12 23:01:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1354. [2021-11-12 23:01:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.371027346637103) internal successors, (4561), 1353 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4561 transitions. [2021-11-12 23:01:18,887 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4561 transitions. Word has length 33 [2021-11-12 23:01:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:18,887 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4561 transitions. [2021-11-12 23:01:18,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4561 transitions. [2021-11-12 23:01:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:18,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:18,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:18,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-11-12 23:01:18,890 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash -361610615, now seen corresponding path program 135 times [2021-11-12 23:01:18,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:18,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734114125] [2021-11-12 23:01:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:18,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:19,836 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:19,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734114125] [2021-11-12 23:01:19,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734114125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:19,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:19,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:19,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099708445] [2021-11-12 23:01:19,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:19,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:19,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:19,838 INFO L87 Difference]: Start difference. First operand 1354 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:21,869 INFO L93 Difference]: Finished difference Result 2809 states and 8329 transitions. [2021-11-12 23:01:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:01:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:21,878 INFO L225 Difference]: With dead ends: 2809 [2021-11-12 23:01:21,878 INFO L226 Difference]: Without dead ends: 2792 [2021-11-12 23:01:21,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:01:21,879 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 242 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1135.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1317.20ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:21,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 60 Invalid, 1500 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [39 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1317.20ms Time] [2021-11-12 23:01:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-11-12 23:01:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 1352. [2021-11-12 23:01:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:01:21,940 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:01:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:21,941 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:01:21,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:01:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:21,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:21,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:21,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-11-12 23:01:21,943 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:21,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1191563271, now seen corresponding path program 136 times [2021-11-12 23:01:21,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:21,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147061459] [2021-11-12 23:01:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:21,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:22,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:22,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147061459] [2021-11-12 23:01:22,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147061459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:22,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:22,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:22,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387546411] [2021-11-12 23:01:22,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:22,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:22,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:22,868 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:24,792 INFO L93 Difference]: Finished difference Result 2815 states and 8345 transitions. [2021-11-12 23:01:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:01:24,792 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:24,799 INFO L225 Difference]: With dead ends: 2815 [2021-11-12 23:01:24,799 INFO L226 Difference]: Without dead ends: 2798 [2021-11-12 23:01:24,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:01:24,800 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 268 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1007.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.41ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1170.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:24,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 51 Invalid, 1316 Unknown, 0 Unchecked, 5.41ms Time], IncrementalHoareTripleChecker [39 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1170.80ms Time] [2021-11-12 23:01:24,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-12 23:01:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1358. [2021-11-12 23:01:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.3655121591746497) internal successors, (4567), 1357 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4567 transitions. [2021-11-12 23:01:24,835 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4567 transitions. Word has length 33 [2021-11-12 23:01:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:24,835 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4567 transitions. [2021-11-12 23:01:24,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4567 transitions. [2021-11-12 23:01:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:24,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:24,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:24,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-11-12 23:01:24,838 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:24,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash -949355937, now seen corresponding path program 137 times [2021-11-12 23:01:24,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:24,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243662543] [2021-11-12 23:01:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:24,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:25,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:25,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243662543] [2021-11-12 23:01:25,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243662543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:25,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:25,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:25,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048240373] [2021-11-12 23:01:25,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:25,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:25,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:25,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:25,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:25,680 INFO L87 Difference]: Start difference. First operand 1358 states and 4567 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:27,210 INFO L93 Difference]: Finished difference Result 2797 states and 8315 transitions. [2021-11-12 23:01:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:01:27,211 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:27,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:27,216 INFO L225 Difference]: With dead ends: 2797 [2021-11-12 23:01:27,216 INFO L226 Difference]: Without dead ends: 2774 [2021-11-12 23:01:27,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:01:27,217 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 229 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 819.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.53ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 954.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:27,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 56 Invalid, 1424 Unknown, 0 Unchecked, 4.53ms Time], IncrementalHoareTripleChecker [39 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 954.40ms Time] [2021-11-12 23:01:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-11-12 23:01:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1350. [2021-11-12 23:01:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:01:27,247 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:01:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:27,247 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:01:27,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:01:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:27,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:27,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:27,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-11-12 23:01:27,249 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2051319561, now seen corresponding path program 138 times [2021-11-12 23:01:27,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:27,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708159577] [2021-11-12 23:01:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:27,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:28,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:28,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708159577] [2021-11-12 23:01:28,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708159577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:28,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:28,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:28,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77150841] [2021-11-12 23:01:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:28,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:28,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:28,046 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:29,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:29,819 INFO L93 Difference]: Finished difference Result 2833 states and 8377 transitions. [2021-11-12 23:01:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:01:29,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:29,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:29,827 INFO L225 Difference]: With dead ends: 2833 [2021-11-12 23:01:29,827 INFO L226 Difference]: Without dead ends: 2812 [2021-11-12 23:01:29,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:01:29,828 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 261 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 949.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1102.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:29,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 50 Invalid, 1306 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [39 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1102.21ms Time] [2021-11-12 23:01:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-11-12 23:01:29,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1356. [2021-11-12 23:01:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.366789667896679) internal successors, (4562), 1355 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4562 transitions. [2021-11-12 23:01:29,881 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4562 transitions. Word has length 33 [2021-11-12 23:01:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:29,881 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4562 transitions. [2021-11-12 23:01:29,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4562 transitions. [2021-11-12 23:01:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:29,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:29,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:29,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-11-12 23:01:29,885 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash 122114311, now seen corresponding path program 139 times [2021-11-12 23:01:29,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:29,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999888068] [2021-11-12 23:01:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:29,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:30,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:30,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999888068] [2021-11-12 23:01:30,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999888068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:30,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:30,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:30,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520306733] [2021-11-12 23:01:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:30,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:30,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:30,808 INFO L87 Difference]: Start difference. First operand 1356 states and 4562 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:32,861 INFO L93 Difference]: Finished difference Result 2843 states and 8396 transitions. [2021-11-12 23:01:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:01:32,861 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:32,867 INFO L225 Difference]: With dead ends: 2843 [2021-11-12 23:01:32,867 INFO L226 Difference]: Without dead ends: 2826 [2021-11-12 23:01:32,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:01:32,868 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 269 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1047.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1217.26ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:32,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 61 Invalid, 1369 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [41 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1217.26ms Time] [2021-11-12 23:01:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-11-12 23:01:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1362. [2021-11-12 23:01:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.360029390154298) internal successors, (4573), 1361 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4573 transitions. [2021-11-12 23:01:32,904 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4573 transitions. Word has length 33 [2021-11-12 23:01:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:32,905 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 4573 transitions. [2021-11-12 23:01:32,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4573 transitions. [2021-11-12 23:01:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:32,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:32,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:32,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-11-12 23:01:32,907 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 676226911, now seen corresponding path program 140 times [2021-11-12 23:01:32,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:32,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003473390] [2021-11-12 23:01:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:32,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:33,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:33,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003473390] [2021-11-12 23:01:33,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003473390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:33,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:33,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:33,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853406832] [2021-11-12 23:01:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:33,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:33,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:33,716 INFO L87 Difference]: Start difference. First operand 1362 states and 4573 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:35,582 INFO L93 Difference]: Finished difference Result 2817 states and 8351 transitions. [2021-11-12 23:01:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:01:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:35,588 INFO L225 Difference]: With dead ends: 2817 [2021-11-12 23:01:35,588 INFO L226 Difference]: Without dead ends: 2788 [2021-11-12 23:01:35,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:01:35,588 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 262 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 959.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1116.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:35,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 49 Invalid, 1265 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [39 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1116.27ms Time] [2021-11-12 23:01:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2021-11-12 23:01:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 1348. [2021-11-12 23:01:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.374907201187825) internal successors, (4546), 1347 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4546 transitions. [2021-11-12 23:01:35,624 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4546 transitions. Word has length 33 [2021-11-12 23:01:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:35,624 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4546 transitions. [2021-11-12 23:01:35,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4546 transitions. [2021-11-12 23:01:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:35,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:35,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:35,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-11-12 23:01:35,627 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash -177603563, now seen corresponding path program 141 times [2021-11-12 23:01:35,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:35,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338089590] [2021-11-12 23:01:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:35,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:36,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:36,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338089590] [2021-11-12 23:01:36,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338089590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:36,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:36,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:36,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884654359] [2021-11-12 23:01:36,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:36,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:36,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:36,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:36,595 INFO L87 Difference]: Start difference. First operand 1348 states and 4546 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:38,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:38,388 INFO L93 Difference]: Finished difference Result 2747 states and 8212 transitions. [2021-11-12 23:01:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:38,389 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:38,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:38,394 INFO L225 Difference]: With dead ends: 2747 [2021-11-12 23:01:38,394 INFO L226 Difference]: Without dead ends: 2736 [2021-11-12 23:01:38,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:38,394 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 268 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 989.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1148.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:38,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 54 Invalid, 1289 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [36 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1148.67ms Time] [2021-11-12 23:01:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-11-12 23:01:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1354. [2021-11-12 23:01:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.371027346637103) internal successors, (4561), 1353 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4561 transitions. [2021-11-12 23:01:38,429 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4561 transitions. Word has length 33 [2021-11-12 23:01:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:38,429 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4561 transitions. [2021-11-12 23:01:38,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4561 transitions. [2021-11-12 23:01:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:38,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:38,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:38,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-11-12 23:01:38,432 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:38,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 357626239, now seen corresponding path program 142 times [2021-11-12 23:01:38,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:38,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862768824] [2021-11-12 23:01:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:38,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:39,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:39,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862768824] [2021-11-12 23:01:39,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862768824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:39,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:39,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:39,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50691808] [2021-11-12 23:01:39,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:39,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:39,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:39,391 INFO L87 Difference]: Start difference. First operand 1354 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:41,084 INFO L93 Difference]: Finished difference Result 2753 states and 8222 transitions. [2021-11-12 23:01:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:41,090 INFO L225 Difference]: With dead ends: 2753 [2021-11-12 23:01:41,090 INFO L226 Difference]: Without dead ends: 2734 [2021-11-12 23:01:41,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:41,090 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 262 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 949.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1101.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:41,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 54 Invalid, 1213 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [36 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1101.42ms Time] [2021-11-12 23:01:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-11-12 23:01:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 1352. [2021-11-12 23:01:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:01:41,125 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:01:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:41,125 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:01:41,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:01:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:41,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:41,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:41,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-11-12 23:01:41,128 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1017875093, now seen corresponding path program 143 times [2021-11-12 23:01:41,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:41,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782071852] [2021-11-12 23:01:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:41,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:41,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:41,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782071852] [2021-11-12 23:01:41,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782071852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:41,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:42,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:42,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129570015] [2021-11-12 23:01:42,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:42,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:42,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:42,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:42,000 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:43,758 INFO L93 Difference]: Finished difference Result 2759 states and 8232 transitions. [2021-11-12 23:01:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:43,758 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:43,764 INFO L225 Difference]: With dead ends: 2759 [2021-11-12 23:01:43,764 INFO L226 Difference]: Without dead ends: 2732 [2021-11-12 23:01:43,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:43,764 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 283 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 953.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.30ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1107.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:43,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 45 Invalid, 1262 Unknown, 0 Unchecked, 5.30ms Time], IncrementalHoareTripleChecker [34 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1107.23ms Time] [2021-11-12 23:01:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-12 23:01:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1350. [2021-11-12 23:01:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:01:43,799 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:01:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:43,799 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:01:43,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:01:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:43,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:43,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:43,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-11-12 23:01:43,802 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash -332041081, now seen corresponding path program 144 times [2021-11-12 23:01:43,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:43,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920316349] [2021-11-12 23:01:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:43,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:44,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:44,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920316349] [2021-11-12 23:01:44,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920316349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:44,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:44,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:44,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520081070] [2021-11-12 23:01:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:44,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:44,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:44,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:44,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:44,722 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:46,600 INFO L93 Difference]: Finished difference Result 2787 states and 8269 transitions. [2021-11-12 23:01:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:46,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:46,606 INFO L225 Difference]: With dead ends: 2787 [2021-11-12 23:01:46,606 INFO L226 Difference]: Without dead ends: 2776 [2021-11-12 23:01:46,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:46,607 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 268 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1063.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.88ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1237.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:46,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 60 Invalid, 1450 Unknown, 0 Unchecked, 5.88ms Time], IncrementalHoareTripleChecker [38 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1237.86ms Time] [2021-11-12 23:01:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2021-11-12 23:01:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 1354. [2021-11-12 23:01:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.371027346637103) internal successors, (4561), 1353 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4561 transitions. [2021-11-12 23:01:46,664 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4561 transitions. Word has length 33 [2021-11-12 23:01:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:46,664 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4561 transitions. [2021-11-12 23:01:46,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4561 transitions. [2021-11-12 23:01:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:46,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:46,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:46,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-11-12 23:01:46,667 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:46,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:46,668 INFO L85 PathProgramCache]: Analyzing trace with hash 203188721, now seen corresponding path program 145 times [2021-11-12 23:01:46,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:46,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994690672] [2021-11-12 23:01:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:46,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:47,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:47,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994690672] [2021-11-12 23:01:47,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994690672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:47,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:47,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:47,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442670593] [2021-11-12 23:01:47,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:47,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:47,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:47,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:47,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:47,619 INFO L87 Difference]: Start difference. First operand 1354 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:49,436 INFO L93 Difference]: Finished difference Result 2793 states and 8279 transitions. [2021-11-12 23:01:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:49,437 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:49,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:49,442 INFO L225 Difference]: With dead ends: 2793 [2021-11-12 23:01:49,442 INFO L226 Difference]: Without dead ends: 2774 [2021-11-12 23:01:49,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:49,443 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 299 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1012.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.42ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1170.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:49,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 54 Invalid, 1241 Unknown, 0 Unchecked, 5.42ms Time], IncrementalHoareTripleChecker [39 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1170.57ms Time] [2021-11-12 23:01:49,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-11-12 23:01:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1352. [2021-11-12 23:01:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:01:49,478 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:01:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:49,478 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:01:49,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:01:49,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:49,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:49,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:49,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-11-12 23:01:49,481 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2018940207, now seen corresponding path program 146 times [2021-11-12 23:01:49,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:49,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108395366] [2021-11-12 23:01:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:49,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:50,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:50,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108395366] [2021-11-12 23:01:50,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108395366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:50,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:50,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:50,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316672914] [2021-11-12 23:01:50,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:50,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:50,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:50,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:50,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:50,437 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:52,435 INFO L93 Difference]: Finished difference Result 2765 states and 8235 transitions. [2021-11-12 23:01:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:52,441 INFO L225 Difference]: With dead ends: 2765 [2021-11-12 23:01:52,441 INFO L226 Difference]: Without dead ends: 2754 [2021-11-12 23:01:52,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:52,442 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 274 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1162.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.13ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1346.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:52,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 56 Invalid, 1454 Unknown, 0 Unchecked, 6.13ms Time], IncrementalHoareTripleChecker [37 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1346.57ms Time] [2021-11-12 23:01:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-12 23:01:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1354. [2021-11-12 23:01:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.369549150036955) internal successors, (4559), 1353 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4559 transitions. [2021-11-12 23:01:52,477 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4559 transitions. Word has length 33 [2021-11-12 23:01:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:52,478 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4559 transitions. [2021-11-12 23:01:52,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4559 transitions. [2021-11-12 23:01:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:52,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:52,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:52,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-11-12 23:01:52,480 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash 413250801, now seen corresponding path program 147 times [2021-11-12 23:01:52,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:52,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302038942] [2021-11-12 23:01:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:52,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:53,407 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:53,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302038942] [2021-11-12 23:01:53,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302038942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:53,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:53,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:53,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689349544] [2021-11-12 23:01:53,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:53,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:53,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:53,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:53,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:53,408 INFO L87 Difference]: Start difference. First operand 1354 states and 4559 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:55,399 INFO L93 Difference]: Finished difference Result 2759 states and 8232 transitions. [2021-11-12 23:01:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:55,405 INFO L225 Difference]: With dead ends: 2759 [2021-11-12 23:01:55,405 INFO L226 Difference]: Without dead ends: 2742 [2021-11-12 23:01:55,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:55,406 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 221 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1144.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1325.10ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:55,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 56 Invalid, 1493 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [37 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1325.10ms Time] [2021-11-12 23:01:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2021-11-12 23:01:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 1352. [2021-11-12 23:01:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3708364174685417) internal successors, (4554), 1351 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4554 transitions. [2021-11-12 23:01:55,441 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4554 transitions. Word has length 33 [2021-11-12 23:01:55,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:55,442 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4554 transitions. [2021-11-12 23:01:55,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4554 transitions. [2021-11-12 23:01:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:55,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:55,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:55,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-11-12 23:01:55,444 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:55,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1966424687, now seen corresponding path program 148 times [2021-11-12 23:01:55,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:55,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578336067] [2021-11-12 23:01:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:55,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:56,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:56,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578336067] [2021-11-12 23:01:56,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578336067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:56,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:56,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:56,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915345227] [2021-11-12 23:01:56,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:56,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:56,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:56,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:56,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:56,520 INFO L87 Difference]: Start difference. First operand 1352 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:58,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:58,163 INFO L93 Difference]: Finished difference Result 2781 states and 8268 transitions. [2021-11-12 23:01:58,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:01:58,164 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:01:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:58,169 INFO L225 Difference]: With dead ends: 2781 [2021-11-12 23:01:58,170 INFO L226 Difference]: Without dead ends: 2764 [2021-11-12 23:01:58,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:58,170 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 279 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 943.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1096.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:58,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 53 Invalid, 1333 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [39 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1096.53ms Time] [2021-11-12 23:01:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-11-12 23:01:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 1358. [2021-11-12 23:01:58,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.3640383198231394) internal successors, (4565), 1357 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4565 transitions. [2021-11-12 23:01:58,207 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4565 transitions. Word has length 33 [2021-11-12 23:01:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:58,207 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4565 transitions. [2021-11-12 23:01:58,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:01:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4565 transitions. [2021-11-12 23:01:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:01:58,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:58,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:01:58,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-11-12 23:01:58,210 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:01:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash -174494521, now seen corresponding path program 149 times [2021-11-12 23:01:58,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:01:58,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673507935] [2021-11-12 23:01:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:58,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:01:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:59,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:01:59,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673507935] [2021-11-12 23:01:59,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673507935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:01:59,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:01:59,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:01:59,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585061977] [2021-11-12 23:01:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:59,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:01:59,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:01:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:01:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:01:59,153 INFO L87 Difference]: Start difference. First operand 1358 states and 4565 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:01,003 INFO L93 Difference]: Finished difference Result 2763 states and 8238 transitions. [2021-11-12 23:02:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:01,004 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:01,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:01,009 INFO L225 Difference]: With dead ends: 2763 [2021-11-12 23:02:01,010 INFO L226 Difference]: Without dead ends: 2740 [2021-11-12 23:02:01,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:01,010 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 255 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1040.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.56ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1207.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:01,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 46 Invalid, 1335 Unknown, 0 Unchecked, 5.56ms Time], IncrementalHoareTripleChecker [38 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1207.25ms Time] [2021-11-12 23:02:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-11-12 23:02:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 1350. [2021-11-12 23:02:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 23:02:01,047 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 23:02:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:01,047 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 23:02:01,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 23:02:01,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:01,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:01,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:01,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-11-12 23:02:01,050 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -156384809, now seen corresponding path program 150 times [2021-11-12 23:02:01,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:01,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938997916] [2021-11-12 23:02:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:01,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:02,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:02,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938997916] [2021-11-12 23:02:02,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938997916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:02,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:02,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:02,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868117726] [2021-11-12 23:02:02,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:02,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:02,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:02,013 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:03,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:03,966 INFO L93 Difference]: Finished difference Result 2781 states and 8267 transitions. [2021-11-12 23:02:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:03,972 INFO L225 Difference]: With dead ends: 2781 [2021-11-12 23:02:03,972 INFO L226 Difference]: Without dead ends: 2756 [2021-11-12 23:02:03,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:03,973 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 245 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1079.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.53ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1249.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:03,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 53 Invalid, 1374 Unknown, 0 Unchecked, 5.53ms Time], IncrementalHoareTripleChecker [37 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1249.37ms Time] [2021-11-12 23:02:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-11-12 23:02:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1356. [2021-11-12 23:02:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3653136531365315) internal successors, (4560), 1355 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4560 transitions. [2021-11-12 23:02:04,009 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4560 transitions. Word has length 33 [2021-11-12 23:02:04,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:04,009 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4560 transitions. [2021-11-12 23:02:04,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4560 transitions. [2021-11-12 23:02:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:04,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:04,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:04,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-11-12 23:02:04,012 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:04,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash 861130773, now seen corresponding path program 151 times [2021-11-12 23:02:04,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:04,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703604426] [2021-11-12 23:02:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:04,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:04,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:04,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703604426] [2021-11-12 23:02:04,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703604426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:04,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:04,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:04,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329026355] [2021-11-12 23:02:04,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:04,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:04,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:04,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:04,989 INFO L87 Difference]: Start difference. First operand 1356 states and 4560 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:06,593 INFO L93 Difference]: Finished difference Result 2771 states and 8242 transitions. [2021-11-12 23:02:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:06,598 INFO L225 Difference]: With dead ends: 2771 [2021-11-12 23:02:06,599 INFO L226 Difference]: Without dead ends: 2754 [2021-11-12 23:02:06,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:06,599 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 277 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 887.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.90ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1031.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:06,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 46 Invalid, 1254 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [36 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1031.64ms Time] [2021-11-12 23:02:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-12 23:02:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1362. [2021-11-12 23:02:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.358559882439383) internal successors, (4571), 1361 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4571 transitions. [2021-11-12 23:02:06,630 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4571 transitions. Word has length 33 [2021-11-12 23:02:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:06,630 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 4571 transitions. [2021-11-12 23:02:06,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4571 transitions. [2021-11-12 23:02:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:06,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:06,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:06,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-11-12 23:02:06,633 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1424688451, now seen corresponding path program 152 times [2021-11-12 23:02:06,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:06,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047180406] [2021-11-12 23:02:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:06,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:07,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:07,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047180406] [2021-11-12 23:02:07,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047180406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:07,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:07,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:07,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213048202] [2021-11-12 23:02:07,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:07,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:07,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:07,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:07,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:07,411 INFO L87 Difference]: Start difference. First operand 1362 states and 4571 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:08,957 INFO L93 Difference]: Finished difference Result 2753 states and 8212 transitions. [2021-11-12 23:02:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:08,963 INFO L225 Difference]: With dead ends: 2753 [2021-11-12 23:02:08,963 INFO L226 Difference]: Without dead ends: 2724 [2021-11-12 23:02:08,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:08,964 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 266 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 836.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.72ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 973.36ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:08,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 40 Invalid, 1256 Unknown, 0 Unchecked, 4.72ms Time], IncrementalHoareTripleChecker [36 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 973.36ms Time] [2021-11-12 23:02:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2021-11-12 23:02:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 1348. [2021-11-12 23:02:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3734224201930214) internal successors, (4544), 1347 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4544 transitions. [2021-11-12 23:02:09,015 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4544 transitions. Word has length 33 [2021-11-12 23:02:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:09,015 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4544 transitions. [2021-11-12 23:02:09,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4544 transitions. [2021-11-12 23:02:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:09,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:09,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:09,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-11-12 23:02:09,017 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:09,018 INFO L85 PathProgramCache]: Analyzing trace with hash 895308447, now seen corresponding path program 153 times [2021-11-12 23:02:09,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:09,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779528767] [2021-11-12 23:02:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:09,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:09,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:09,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779528767] [2021-11-12 23:02:09,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779528767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:09,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:09,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:09,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327936982] [2021-11-12 23:02:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:09,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:09,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:09,854 INFO L87 Difference]: Start difference. First operand 1348 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:11,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:11,649 INFO L93 Difference]: Finished difference Result 2787 states and 8297 transitions. [2021-11-12 23:02:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:11,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:11,655 INFO L225 Difference]: With dead ends: 2787 [2021-11-12 23:02:11,655 INFO L226 Difference]: Without dead ends: 2766 [2021-11-12 23:02:11,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:11,656 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 217 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1031.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1195.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:11,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 51 Invalid, 1404 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [33 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1195.66ms Time] [2021-11-12 23:02:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-11-12 23:02:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1360. [2021-11-12 23:02:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3642384105960264) internal successors, (4572), 1359 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4572 transitions. [2021-11-12 23:02:11,692 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4572 transitions. Word has length 33 [2021-11-12 23:02:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:11,693 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4572 transitions. [2021-11-12 23:02:11,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4572 transitions. [2021-11-12 23:02:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:11,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:11,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:11,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-11-12 23:02:11,695 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:11,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1313997831, now seen corresponding path program 154 times [2021-11-12 23:02:11,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:11,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639098957] [2021-11-12 23:02:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:11,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:12,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:12,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639098957] [2021-11-12 23:02:12,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639098957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:12,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:12,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:12,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283189508] [2021-11-12 23:02:12,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:12,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:12,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:12,607 INFO L87 Difference]: Start difference. First operand 1360 states and 4572 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:14,321 INFO L93 Difference]: Finished difference Result 2805 states and 8321 transitions. [2021-11-12 23:02:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:14,326 INFO L225 Difference]: With dead ends: 2805 [2021-11-12 23:02:14,326 INFO L226 Difference]: Without dead ends: 2788 [2021-11-12 23:02:14,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:14,327 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 262 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 952.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1103.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:14,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 47 Invalid, 1216 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [36 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1103.55ms Time] [2021-11-12 23:02:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2021-11-12 23:02:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 1366. [2021-11-12 23:02:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.3575091575091576) internal successors, (4583), 1365 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4583 transitions. [2021-11-12 23:02:14,362 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4583 transitions. Word has length 33 [2021-11-12 23:02:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:14,363 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 4583 transitions. [2021-11-12 23:02:14,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4583 transitions. [2021-11-12 23:02:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:14,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:14,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:14,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-11-12 23:02:14,366 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -759885231, now seen corresponding path program 155 times [2021-11-12 23:02:14,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:14,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781459473] [2021-11-12 23:02:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:14,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:15,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:15,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781459473] [2021-11-12 23:02:15,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781459473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:15,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:15,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:15,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104344347] [2021-11-12 23:02:15,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:15,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:15,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:15,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:15,276 INFO L87 Difference]: Start difference. First operand 1366 states and 4583 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:16,978 INFO L93 Difference]: Finished difference Result 2787 states and 8291 transitions. [2021-11-12 23:02:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:16,979 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:16,984 INFO L225 Difference]: With dead ends: 2787 [2021-11-12 23:02:16,984 INFO L226 Difference]: Without dead ends: 2760 [2021-11-12 23:02:16,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:16,985 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 237 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 954.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.27ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1108.29ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:16,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 43 Invalid, 1252 Unknown, 0 Unchecked, 5.27ms Time], IncrementalHoareTripleChecker [35 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1108.29ms Time] [2021-11-12 23:02:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-11-12 23:02:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1354. [2021-11-12 23:02:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3665927568366594) internal successors, (4555), 1353 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4555 transitions. [2021-11-12 23:02:17,022 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4555 transitions. Word has length 33 [2021-11-12 23:02:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:17,022 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4555 transitions. [2021-11-12 23:02:17,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4555 transitions. [2021-11-12 23:02:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:17,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:17,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:17,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-11-12 23:02:17,025 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1809724345, now seen corresponding path program 156 times [2021-11-12 23:02:17,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:17,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479579510] [2021-11-12 23:02:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:17,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:17,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:17,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479579510] [2021-11-12 23:02:17,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479579510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:17,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:17,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:17,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574066017] [2021-11-12 23:02:17,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:17,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:17,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:17,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:17,955 INFO L87 Difference]: Start difference. First operand 1354 states and 4555 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:19,886 INFO L93 Difference]: Finished difference Result 2777 states and 8267 transitions. [2021-11-12 23:02:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:19,886 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:19,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:19,892 INFO L225 Difference]: With dead ends: 2777 [2021-11-12 23:02:19,892 INFO L226 Difference]: Without dead ends: 2752 [2021-11-12 23:02:19,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:19,892 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 246 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1086.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1248.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:19,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 45 Invalid, 1284 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [34 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1248.86ms Time] [2021-11-12 23:02:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-11-12 23:02:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 1360. [2021-11-12 23:02:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3598233995584987) internal successors, (4566), 1359 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4566 transitions. [2021-11-12 23:02:19,930 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4566 transitions. Word has length 33 [2021-11-12 23:02:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:19,930 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4566 transitions. [2021-11-12 23:02:19,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4566 transitions. [2021-11-12 23:02:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:19,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:19,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:19,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-11-12 23:02:19,933 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1625179129, now seen corresponding path program 157 times [2021-11-12 23:02:19,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:19,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599906397] [2021-11-12 23:02:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:19,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:20,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:20,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599906397] [2021-11-12 23:02:20,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599906397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:20,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:20,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:20,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354677592] [2021-11-12 23:02:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:20,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:20,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:20,804 INFO L87 Difference]: Start difference. First operand 1360 states and 4566 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:22,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:22,633 INFO L93 Difference]: Finished difference Result 2777 states and 8251 transitions. [2021-11-12 23:02:22,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:22,633 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:22,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:22,641 INFO L225 Difference]: With dead ends: 2777 [2021-11-12 23:02:22,641 INFO L226 Difference]: Without dead ends: 2760 [2021-11-12 23:02:22,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:22,641 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 243 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1028.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.40ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1191.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:22,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 49 Invalid, 1320 Unknown, 0 Unchecked, 5.40ms Time], IncrementalHoareTripleChecker [34 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1191.58ms Time] [2021-11-12 23:02:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-11-12 23:02:22,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1366. [2021-11-12 23:02:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.353113553113553) internal successors, (4577), 1365 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4577 transitions. [2021-11-12 23:02:22,677 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4577 transitions. Word has length 33 [2021-11-12 23:02:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:22,678 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 4577 transitions. [2021-11-12 23:02:22,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4577 transitions. [2021-11-12 23:02:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:22,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:22,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:22,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-11-12 23:02:22,680 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1071066529, now seen corresponding path program 158 times [2021-11-12 23:02:22,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:22,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150942472] [2021-11-12 23:02:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:22,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:23,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:23,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150942472] [2021-11-12 23:02:23,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150942472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:23,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:23,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:23,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731404357] [2021-11-12 23:02:23,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:23,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:23,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:23,522 INFO L87 Difference]: Start difference. First operand 1366 states and 4577 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:25,371 INFO L93 Difference]: Finished difference Result 2759 states and 8221 transitions. [2021-11-12 23:02:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:25,380 INFO L225 Difference]: With dead ends: 2759 [2021-11-12 23:02:25,380 INFO L226 Difference]: Without dead ends: 2724 [2021-11-12 23:02:25,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:25,381 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 203 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1073.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1244.92ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:25,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 43 Invalid, 1398 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [34 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1244.92ms Time] [2021-11-12 23:02:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2021-11-12 23:02:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 1346. [2021-11-12 23:02:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.374721189591078) internal successors, (4539), 1345 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4539 transitions. [2021-11-12 23:02:25,434 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4539 transitions. Word has length 33 [2021-11-12 23:02:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:25,434 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4539 transitions. [2021-11-12 23:02:25,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4539 transitions. [2021-11-12 23:02:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:25,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:25,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:25,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-11-12 23:02:25,439 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash -142822867, now seen corresponding path program 159 times [2021-11-12 23:02:25,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:25,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687231867] [2021-11-12 23:02:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:25,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:26,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:26,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687231867] [2021-11-12 23:02:26,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687231867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:26,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:26,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:26,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252278374] [2021-11-12 23:02:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:26,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:26,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:26,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:26,353 INFO L87 Difference]: Start difference. First operand 1346 states and 4539 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:28,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:28,241 INFO L93 Difference]: Finished difference Result 2825 states and 8363 transitions. [2021-11-12 23:02:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:02:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:28,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:28,247 INFO L225 Difference]: With dead ends: 2825 [2021-11-12 23:02:28,247 INFO L226 Difference]: Without dead ends: 2804 [2021-11-12 23:02:28,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:02:28,248 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 251 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1071.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1241.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:28,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 53 Invalid, 1362 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [36 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1241.86ms Time] [2021-11-12 23:02:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-12 23:02:28,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1370. [2021-11-12 23:02:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.352081811541271) internal successors, (4589), 1369 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4589 transitions. [2021-11-12 23:02:28,285 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4589 transitions. Word has length 33 [2021-11-12 23:02:28,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:28,285 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4589 transitions. [2021-11-12 23:02:28,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4589 transitions. [2021-11-12 23:02:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:28,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:28,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:28,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-11-12 23:02:28,288 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:28,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:28,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1942838151, now seen corresponding path program 160 times [2021-11-12 23:02:28,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:28,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010635014] [2021-11-12 23:02:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:28,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:29,142 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:29,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010635014] [2021-11-12 23:02:29,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010635014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:29,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:29,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:29,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287777696] [2021-11-12 23:02:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:29,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:29,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:29,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:29,143 INFO L87 Difference]: Start difference. First operand 1370 states and 4589 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:31,020 INFO L93 Difference]: Finished difference Result 2843 states and 8387 transitions. [2021-11-12 23:02:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:02:31,020 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:31,028 INFO L225 Difference]: With dead ends: 2843 [2021-11-12 23:02:31,029 INFO L226 Difference]: Without dead ends: 2826 [2021-11-12 23:02:31,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:02:31,030 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 274 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 978.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1135.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:31,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 53 Invalid, 1293 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [36 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 1135.95ms Time] [2021-11-12 23:02:31,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-11-12 23:02:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1376. [2021-11-12 23:02:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.3454545454545452) internal successors, (4600), 1375 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4600 transitions. [2021-11-12 23:02:31,085 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4600 transitions. Word has length 33 [2021-11-12 23:02:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:31,085 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4600 transitions. [2021-11-12 23:02:31,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4600 transitions. [2021-11-12 23:02:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:31,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:31,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:31,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-11-12 23:02:31,088 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:31,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1798016545, now seen corresponding path program 161 times [2021-11-12 23:02:31,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:31,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566611904] [2021-11-12 23:02:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:31,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:32,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:32,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566611904] [2021-11-12 23:02:32,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566611904] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:32,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:32,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:32,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444209365] [2021-11-12 23:02:32,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:32,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:32,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:32,225 INFO L87 Difference]: Start difference. First operand 1376 states and 4600 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:33,942 INFO L93 Difference]: Finished difference Result 2825 states and 8357 transitions. [2021-11-12 23:02:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:02:33,943 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:33,948 INFO L225 Difference]: With dead ends: 2825 [2021-11-12 23:02:33,948 INFO L226 Difference]: Without dead ends: 2798 [2021-11-12 23:02:33,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:02:33,948 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 249 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 936.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1089.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:33,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 49 Invalid, 1297 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [34 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1089.75ms Time] [2021-11-12 23:02:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-12 23:02:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1364. [2021-11-12 23:02:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 3.3543653705062364) internal successors, (4572), 1363 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4572 transitions. [2021-11-12 23:02:33,987 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4572 transitions. Word has length 33 [2021-11-12 23:02:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:33,987 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 4572 transitions. [2021-11-12 23:02:33,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4572 transitions. [2021-11-12 23:02:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:33,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:33,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:33,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-11-12 23:02:33,990 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 771593031, now seen corresponding path program 162 times [2021-11-12 23:02:33,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:33,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155294308] [2021-11-12 23:02:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:33,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:34,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:34,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155294308] [2021-11-12 23:02:34,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155294308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:34,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:34,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:34,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801177910] [2021-11-12 23:02:34,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:34,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:34,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:34,951 INFO L87 Difference]: Start difference. First operand 1364 states and 4572 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:36,842 INFO L93 Difference]: Finished difference Result 2799 states and 8303 transitions. [2021-11-12 23:02:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:36,848 INFO L225 Difference]: With dead ends: 2799 [2021-11-12 23:02:36,848 INFO L226 Difference]: Without dead ends: 2774 [2021-11-12 23:02:36,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:36,848 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 235 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1082.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.43ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1253.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:36,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 55 Invalid, 1351 Unknown, 0 Unchecked, 5.43ms Time], IncrementalHoareTripleChecker [33 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1253.05ms Time] [2021-11-12 23:02:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-11-12 23:02:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1370. [2021-11-12 23:02:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.347699050401753) internal successors, (4583), 1369 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4583 transitions. [2021-11-12 23:02:36,884 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4583 transitions. Word has length 33 [2021-11-12 23:02:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:36,884 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4583 transitions. [2021-11-12 23:02:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4583 transitions. [2021-11-12 23:02:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:36,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:36,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:36,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-11-12 23:02:36,887 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1631656853, now seen corresponding path program 163 times [2021-11-12 23:02:36,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:36,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103217180] [2021-11-12 23:02:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:36,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:37,870 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:37,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103217180] [2021-11-12 23:02:37,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103217180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:37,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:37,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:37,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248559630] [2021-11-12 23:02:37,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:37,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:37,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:37,872 INFO L87 Difference]: Start difference. First operand 1370 states and 4583 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:39,710 INFO L93 Difference]: Finished difference Result 2799 states and 8287 transitions. [2021-11-12 23:02:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:39,710 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:39,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:39,716 INFO L225 Difference]: With dead ends: 2799 [2021-11-12 23:02:39,716 INFO L226 Difference]: Without dead ends: 2782 [2021-11-12 23:02:39,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:39,716 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 232 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1063.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1234.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:39,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 52 Invalid, 1417 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [33 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1234.52ms Time] [2021-11-12 23:02:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2021-11-12 23:02:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1376. [2021-11-12 23:02:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.341090909090909) internal successors, (4594), 1375 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4594 transitions. [2021-11-12 23:02:39,771 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 4594 transitions. Word has length 33 [2021-11-12 23:02:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:39,771 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 4594 transitions. [2021-11-12 23:02:39,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 4594 transitions. [2021-11-12 23:02:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:39,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:39,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:39,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-11-12 23:02:39,775 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2109197843, now seen corresponding path program 164 times [2021-11-12 23:02:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:39,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030917758] [2021-11-12 23:02:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:39,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:40,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:40,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030917758] [2021-11-12 23:02:40,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030917758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:40,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:40,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:40,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590543218] [2021-11-12 23:02:40,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:40,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:40,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:40,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:40,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:40,741 INFO L87 Difference]: Start difference. First operand 1376 states and 4594 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:42,555 INFO L93 Difference]: Finished difference Result 2781 states and 8257 transitions. [2021-11-12 23:02:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:42,555 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:42,560 INFO L225 Difference]: With dead ends: 2781 [2021-11-12 23:02:42,560 INFO L226 Difference]: Without dead ends: 2732 [2021-11-12 23:02:42,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:42,561 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 259 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1008.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1173.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:42,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 43 Invalid, 1360 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [33 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1173.13ms Time] [2021-11-12 23:02:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-12 23:02:42,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1342. [2021-11-12 23:02:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.3758389261744965) internal successors, (4527), 1341 states have internal predecessors, (4527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 4527 transitions. [2021-11-12 23:02:42,593 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 4527 transitions. Word has length 33 [2021-11-12 23:02:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:42,593 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 4527 transitions. [2021-11-12 23:02:42,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 4527 transitions. [2021-11-12 23:02:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:42,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:42,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:42,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-11-12 23:02:42,596 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1018118719, now seen corresponding path program 165 times [2021-11-12 23:02:42,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:42,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839766252] [2021-11-12 23:02:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:42,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:43,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:43,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839766252] [2021-11-12 23:02:43,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839766252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:43,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:43,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:43,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683254669] [2021-11-12 23:02:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:43,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:43,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:43,491 INFO L87 Difference]: Start difference. First operand 1342 states and 4527 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:45,373 INFO L93 Difference]: Finished difference Result 2795 states and 8383 transitions. [2021-11-12 23:02:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:45,378 INFO L225 Difference]: With dead ends: 2795 [2021-11-12 23:02:45,378 INFO L226 Difference]: Without dead ends: 2784 [2021-11-12 23:02:45,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:45,379 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1070.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.31ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1236.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:45,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 47 Invalid, 1358 Unknown, 0 Unchecked, 5.31ms Time], IncrementalHoareTripleChecker [37 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1236.97ms Time] [2021-11-12 23:02:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2021-11-12 23:02:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1352. [2021-11-12 23:02:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 23:02:45,424 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 23:02:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:45,424 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 23:02:45,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 23:02:45,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:45,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:45,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:45,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-11-12 23:02:45,428 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash -587570687, now seen corresponding path program 166 times [2021-11-12 23:02:45,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:45,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900030616] [2021-11-12 23:02:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:45,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:46,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:46,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900030616] [2021-11-12 23:02:46,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900030616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:46,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:46,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:46,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332097337] [2021-11-12 23:02:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:46,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:46,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:46,312 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:48,258 INFO L93 Difference]: Finished difference Result 2799 states and 8389 transitions. [2021-11-12 23:02:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:48,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:48,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:48,264 INFO L225 Difference]: With dead ends: 2799 [2021-11-12 23:02:48,264 INFO L226 Difference]: Without dead ends: 2782 [2021-11-12 23:02:48,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:48,264 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 248 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1049.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.37ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1215.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:48,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 46 Invalid, 1356 Unknown, 0 Unchecked, 5.37ms Time], IncrementalHoareTripleChecker [37 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 1215.63ms Time] [2021-11-12 23:02:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2021-11-12 23:02:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 1350. [2021-11-12 23:02:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.375092661230541) internal successors, (4553), 1349 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4553 transitions. [2021-11-12 23:02:48,300 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4553 transitions. Word has length 33 [2021-11-12 23:02:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:48,300 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4553 transitions. [2021-11-12 23:02:48,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:48,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4553 transitions. [2021-11-12 23:02:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:48,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:48,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:48,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-11-12 23:02:48,303 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:48,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1207609417, now seen corresponding path program 167 times [2021-11-12 23:02:48,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:48,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631981667] [2021-11-12 23:02:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:48,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:49,267 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:49,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631981667] [2021-11-12 23:02:49,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631981667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:49,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:49,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:49,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414850577] [2021-11-12 23:02:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:49,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:49,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:49,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:49,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:49,269 INFO L87 Difference]: Start difference. First operand 1350 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:51,125 INFO L93 Difference]: Finished difference Result 2803 states and 8395 transitions. [2021-11-12 23:02:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:51,126 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:51,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:51,131 INFO L225 Difference]: With dead ends: 2803 [2021-11-12 23:02:51,131 INFO L226 Difference]: Without dead ends: 2780 [2021-11-12 23:02:51,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:51,132 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 280 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1050.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.39ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1212.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:51,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 42 Invalid, 1287 Unknown, 0 Unchecked, 19.39ms Time], IncrementalHoareTripleChecker [37 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1212.70ms Time] [2021-11-12 23:02:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2021-11-12 23:02:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 1348. [2021-11-12 23:02:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.376391982182628) internal successors, (4548), 1347 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4548 transitions. [2021-11-12 23:02:51,167 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4548 transitions. Word has length 33 [2021-11-12 23:02:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:51,168 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4548 transitions. [2021-11-12 23:02:51,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4548 transitions. [2021-11-12 23:02:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:51,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:51,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:51,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-11-12 23:02:51,170 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1304118857, now seen corresponding path program 168 times [2021-11-12 23:02:51,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:51,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855151873] [2021-11-12 23:02:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:51,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:52,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:52,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855151873] [2021-11-12 23:02:52,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855151873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:52,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:52,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:52,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402480747] [2021-11-12 23:02:52,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:52,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:52,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:52,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:52,052 INFO L87 Difference]: Start difference. First operand 1348 states and 4548 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:53,689 INFO L93 Difference]: Finished difference Result 2823 states and 8432 transitions. [2021-11-12 23:02:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:53,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:53,694 INFO L225 Difference]: With dead ends: 2823 [2021-11-12 23:02:53,694 INFO L226 Difference]: Without dead ends: 2812 [2021-11-12 23:02:53,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:53,694 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 261 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 939.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1091.14ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:53,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 47 Invalid, 1308 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [38 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1091.14ms Time] [2021-11-12 23:02:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-11-12 23:02:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1352. [2021-11-12 23:02:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 23:02:53,722 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 23:02:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:53,722 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 23:02:53,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 23:02:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:53,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:53,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:53,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-11-12 23:02:53,724 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:53,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1839348659, now seen corresponding path program 169 times [2021-11-12 23:02:53,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:53,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408102297] [2021-11-12 23:02:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:53,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:54,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:54,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408102297] [2021-11-12 23:02:54,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408102297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:54,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:54,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:54,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244224722] [2021-11-12 23:02:54,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:54,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:54,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:54,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:54,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:54,531 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:56,119 INFO L93 Difference]: Finished difference Result 2829 states and 8442 transitions. [2021-11-12 23:02:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:56,120 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:56,125 INFO L225 Difference]: With dead ends: 2829 [2021-11-12 23:02:56,125 INFO L226 Difference]: Without dead ends: 2810 [2021-11-12 23:02:56,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:56,125 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 241 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 909.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.85ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1052.71ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:56,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 60 Invalid, 1452 Unknown, 0 Unchecked, 4.85ms Time], IncrementalHoareTripleChecker [39 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1052.71ms Time] [2021-11-12 23:02:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-11-12 23:02:56,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1350. [2021-11-12 23:02:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.375092661230541) internal successors, (4553), 1349 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4553 transitions. [2021-11-12 23:02:56,159 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4553 transitions. Word has length 33 [2021-11-12 23:02:56,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:56,160 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4553 transitions. [2021-11-12 23:02:56,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4553 transitions. [2021-11-12 23:02:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:56,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:56,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:56,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-11-12 23:02:56,162 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:56,163 INFO L85 PathProgramCache]: Analyzing trace with hash -639867151, now seen corresponding path program 170 times [2021-11-12 23:02:56,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:56,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601227501] [2021-11-12 23:02:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:56,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:56,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:56,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601227501] [2021-11-12 23:02:56,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601227501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:56,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:56,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:56,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095343523] [2021-11-12 23:02:56,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:56,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:56,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:56,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:56,952 INFO L87 Difference]: Start difference. First operand 1350 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:58,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:58,725 INFO L93 Difference]: Finished difference Result 2835 states and 8442 transitions. [2021-11-12 23:02:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:02:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:02:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:58,731 INFO L225 Difference]: With dead ends: 2835 [2021-11-12 23:02:58,731 INFO L226 Difference]: Without dead ends: 2824 [2021-11-12 23:02:58,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:02:58,732 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 274 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 986.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1144.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:58,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 48 Invalid, 1390 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [38 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1144.81ms Time] [2021-11-12 23:02:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-11-12 23:02:58,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 1352. [2021-11-12 23:02:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:02:58,768 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:02:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:58,768 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:02:58,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:02:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:02:58,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:02:58,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:58,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:02:58,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-11-12 23:02:58,771 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:02:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:58,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2049410739, now seen corresponding path program 171 times [2021-11-12 23:02:58,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:02:58,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932309306] [2021-11-12 23:02:58,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:58,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:02:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:59,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:02:59,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932309306] [2021-11-12 23:02:59,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932309306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:59,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:59,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:02:59,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523504805] [2021-11-12 23:02:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:59,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:02:59,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:02:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:02:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:02:59,697 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:01,526 INFO L93 Difference]: Finished difference Result 2829 states and 8439 transitions. [2021-11-12 23:03:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:01,527 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:01,532 INFO L225 Difference]: With dead ends: 2829 [2021-11-12 23:03:01,532 INFO L226 Difference]: Without dead ends: 2812 [2021-11-12 23:03:01,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:01,533 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 233 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1022.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1187.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:01,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 49 Invalid, 1403 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [38 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1187.04ms Time] [2021-11-12 23:03:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-11-12 23:03:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1350. [2021-11-12 23:03:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:03:01,569 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:03:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:01,569 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:03:01,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:03:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:01,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:01,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:01,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-11-12 23:03:01,572 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash -692382671, now seen corresponding path program 172 times [2021-11-12 23:03:01,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:01,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491997558] [2021-11-12 23:03:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:01,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:02,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:02,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491997558] [2021-11-12 23:03:02,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491997558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:02,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:02,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:02,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163109401] [2021-11-12 23:03:02,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:02,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:02,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:02,495 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:04,422 INFO L93 Difference]: Finished difference Result 2835 states and 8455 transitions. [2021-11-12 23:03:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:04,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:04,428 INFO L225 Difference]: With dead ends: 2835 [2021-11-12 23:03:04,428 INFO L226 Difference]: Without dead ends: 2818 [2021-11-12 23:03:04,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:04,428 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1101.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.03ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1271.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:04,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 47 Invalid, 1392 Unknown, 0 Unchecked, 6.03ms Time], IncrementalHoareTripleChecker [38 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1271.75ms Time] [2021-11-12 23:03:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-11-12 23:03:04,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1356. [2021-11-12 23:03:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.366789667896679) internal successors, (4562), 1355 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:04,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4562 transitions. [2021-11-12 23:03:04,462 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4562 transitions. Word has length 33 [2021-11-12 23:03:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:04,462 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4562 transitions. [2021-11-12 23:03:04,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4562 transitions. [2021-11-12 23:03:04,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:04,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:04,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:04,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-11-12 23:03:04,465 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:04,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1461665417, now seen corresponding path program 173 times [2021-11-12 23:03:04,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:04,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859178560] [2021-11-12 23:03:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:04,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:05,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:05,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859178560] [2021-11-12 23:03:05,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859178560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:05,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:05,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:05,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808492792] [2021-11-12 23:03:05,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:05,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:05,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:05,345 INFO L87 Difference]: Start difference. First operand 1356 states and 4562 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:07,228 INFO L93 Difference]: Finished difference Result 2817 states and 8425 transitions. [2021-11-12 23:03:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:07,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:07,234 INFO L225 Difference]: With dead ends: 2817 [2021-11-12 23:03:07,234 INFO L226 Difference]: Without dead ends: 2794 [2021-11-12 23:03:07,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:07,235 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 210 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1058.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1229.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:07,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 47 Invalid, 1437 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [37 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1229.13ms Time] [2021-11-12 23:03:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2021-11-12 23:03:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1348. [2021-11-12 23:03:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.374907201187825) internal successors, (4546), 1347 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4546 transitions. [2021-11-12 23:03:07,269 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4546 transitions. Word has length 33 [2021-11-12 23:03:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:07,270 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4546 transitions. [2021-11-12 23:03:07,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4546 transitions. [2021-11-12 23:03:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:07,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:07,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:07,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-11-12 23:03:07,272 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash 167373619, now seen corresponding path program 174 times [2021-11-12 23:03:07,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:07,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457506261] [2021-11-12 23:03:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:07,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:08,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:08,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457506261] [2021-11-12 23:03:08,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457506261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:08,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:08,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:08,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965987660] [2021-11-12 23:03:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:08,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:08,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:08,112 INFO L87 Difference]: Start difference. First operand 1348 states and 4546 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:10,055 INFO L93 Difference]: Finished difference Result 2837 states and 8457 transitions. [2021-11-12 23:03:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:10,056 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:10,061 INFO L225 Difference]: With dead ends: 2837 [2021-11-12 23:03:10,061 INFO L226 Difference]: Without dead ends: 2816 [2021-11-12 23:03:10,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:10,062 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 266 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1009.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.23ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1167.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:10,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 43 Invalid, 1233 Unknown, 0 Unchecked, 5.23ms Time], IncrementalHoareTripleChecker [37 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1167.39ms Time] [2021-11-12 23:03:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-12 23:03:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1354. [2021-11-12 23:03:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.368070953436807) internal successors, (4557), 1353 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4557 transitions. [2021-11-12 23:03:10,097 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4557 transitions. Word has length 33 [2021-11-12 23:03:10,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:10,097 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4557 transitions. [2021-11-12 23:03:10,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4557 transitions. [2021-11-12 23:03:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:10,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:10,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:10,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-11-12 23:03:10,100 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1761831631, now seen corresponding path program 175 times [2021-11-12 23:03:10,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:10,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742243678] [2021-11-12 23:03:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:10,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:10,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:10,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742243678] [2021-11-12 23:03:10,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742243678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:10,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:10,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:10,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242452359] [2021-11-12 23:03:10,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:10,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:10,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:10,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:10,942 INFO L87 Difference]: Start difference. First operand 1354 states and 4557 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:12,716 INFO L93 Difference]: Finished difference Result 2839 states and 8461 transitions. [2021-11-12 23:03:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:12,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:12,725 INFO L225 Difference]: With dead ends: 2839 [2021-11-12 23:03:12,725 INFO L226 Difference]: Without dead ends: 2822 [2021-11-12 23:03:12,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:12,726 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 264 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 976.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.32ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1133.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:12,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 49 Invalid, 1266 Unknown, 0 Unchecked, 5.32ms Time], IncrementalHoareTripleChecker [38 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1133.73ms Time] [2021-11-12 23:03:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-11-12 23:03:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1360. [2021-11-12 23:03:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3612950699043416) internal successors, (4568), 1359 states have internal predecessors, (4568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4568 transitions. [2021-11-12 23:03:12,779 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4568 transitions. Word has length 33 [2021-11-12 23:03:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:12,780 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4568 transitions. [2021-11-12 23:03:12,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:12,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4568 transitions. [2021-11-12 23:03:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:12,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:12,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:12,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-11-12 23:03:12,782 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1207719031, now seen corresponding path program 176 times [2021-11-12 23:03:12,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:12,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309689597] [2021-11-12 23:03:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:12,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:13,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:13,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309689597] [2021-11-12 23:03:13,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309689597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:13,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:13,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:13,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526333403] [2021-11-12 23:03:13,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:13,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:13,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:13,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:13,720 INFO L87 Difference]: Start difference. First operand 1360 states and 4568 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:15,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:15,532 INFO L93 Difference]: Finished difference Result 2821 states and 8431 transitions. [2021-11-12 23:03:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:15,533 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:15,538 INFO L225 Difference]: With dead ends: 2821 [2021-11-12 23:03:15,538 INFO L226 Difference]: Without dead ends: 2792 [2021-11-12 23:03:15,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:15,538 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 209 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1049.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.31ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1218.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:15,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 48 Invalid, 1428 Unknown, 0 Unchecked, 5.31ms Time], IncrementalHoareTripleChecker [36 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 1218.31ms Time] [2021-11-12 23:03:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-11-12 23:03:15,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 1346. [2021-11-12 23:03:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.3762081784386617) internal successors, (4541), 1345 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4541 transitions. [2021-11-12 23:03:15,574 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4541 transitions. Word has length 33 [2021-11-12 23:03:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:15,574 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4541 transitions. [2021-11-12 23:03:15,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4541 transitions. [2021-11-12 23:03:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:15,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:15,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:15,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-11-12 23:03:15,577 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2061549505, now seen corresponding path program 177 times [2021-11-12 23:03:15,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:15,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230807620] [2021-11-12 23:03:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:15,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:16,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:16,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230807620] [2021-11-12 23:03:16,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230807620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:16,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:16,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:16,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754865118] [2021-11-12 23:03:16,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:16,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:16,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:16,426 INFO L87 Difference]: Start difference. First operand 1346 states and 4541 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:18,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:18,317 INFO L93 Difference]: Finished difference Result 2799 states and 8389 transitions. [2021-11-12 23:03:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:18,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:18,323 INFO L225 Difference]: With dead ends: 2799 [2021-11-12 23:03:18,323 INFO L226 Difference]: Without dead ends: 2788 [2021-11-12 23:03:18,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:18,324 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 222 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1102.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.60ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1277.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:18,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 55 Invalid, 1475 Unknown, 0 Unchecked, 5.60ms Time], IncrementalHoareTripleChecker [37 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1277.47ms Time] [2021-11-12 23:03:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2021-11-12 23:03:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 1352. [2021-11-12 23:03:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:03:18,380 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:03:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:18,380 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:03:18,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:03:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:18,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:18,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:18,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-11-12 23:03:18,385 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1526319703, now seen corresponding path program 178 times [2021-11-12 23:03:18,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:18,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314145346] [2021-11-12 23:03:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:18,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:19,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:19,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314145346] [2021-11-12 23:03:19,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314145346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:19,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:19,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:19,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884760575] [2021-11-12 23:03:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:19,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:19,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:19,215 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:21,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:21,192 INFO L93 Difference]: Finished difference Result 2805 states and 8399 transitions. [2021-11-12 23:03:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:21,193 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:21,198 INFO L225 Difference]: With dead ends: 2805 [2021-11-12 23:03:21,198 INFO L226 Difference]: Without dead ends: 2786 [2021-11-12 23:03:21,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:21,199 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 220 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1090.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.22ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1262.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:21,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 50 Invalid, 1337 Unknown, 0 Unchecked, 7.22ms Time], IncrementalHoareTripleChecker [37 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1262.16ms Time] [2021-11-12 23:03:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-11-12 23:03:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1350. [2021-11-12 23:03:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:03:21,240 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:03:21,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:21,240 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:03:21,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:03:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:21,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:21,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:21,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-11-12 23:03:21,243 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash -866070849, now seen corresponding path program 179 times [2021-11-12 23:03:21,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:21,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279240879] [2021-11-12 23:03:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:21,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:22,178 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:22,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279240879] [2021-11-12 23:03:22,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279240879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:22,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:22,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:22,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563865297] [2021-11-12 23:03:22,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:22,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:22,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:22,179 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:23,968 INFO L93 Difference]: Finished difference Result 2811 states and 8409 transitions. [2021-11-12 23:03:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:23,969 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:23,975 INFO L225 Difference]: With dead ends: 2811 [2021-11-12 23:03:23,975 INFO L226 Difference]: Without dead ends: 2784 [2021-11-12 23:03:23,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:23,975 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 257 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 995.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.11ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1154.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:23,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 42 Invalid, 1315 Unknown, 0 Unchecked, 5.11ms Time], IncrementalHoareTripleChecker [36 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1154.87ms Time] [2021-11-12 23:03:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2021-11-12 23:03:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1348. [2021-11-12 23:03:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.374907201187825) internal successors, (4546), 1347 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4546 transitions. [2021-11-12 23:03:24,011 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4546 transitions. Word has length 33 [2021-11-12 23:03:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:24,012 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4546 transitions. [2021-11-12 23:03:24,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4546 transitions. [2021-11-12 23:03:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:24,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:24,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:24,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-11-12 23:03:24,014 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:24,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2078980273, now seen corresponding path program 180 times [2021-11-12 23:03:24,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:24,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721963401] [2021-11-12 23:03:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:24,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:24,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:24,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721963401] [2021-11-12 23:03:24,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721963401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:24,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:24,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:24,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038549470] [2021-11-12 23:03:24,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:24,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:24,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:24,938 INFO L87 Difference]: Start difference. First operand 1348 states and 4546 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:26,789 INFO L93 Difference]: Finished difference Result 2843 states and 8458 transitions. [2021-11-12 23:03:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:26,795 INFO L225 Difference]: With dead ends: 2843 [2021-11-12 23:03:26,795 INFO L226 Difference]: Without dead ends: 2832 [2021-11-12 23:03:26,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:26,796 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 286 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1046.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1214.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:26,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 53 Invalid, 1339 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [39 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1214.50ms Time] [2021-11-12 23:03:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-12 23:03:26,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1352. [2021-11-12 23:03:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:03:26,833 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:03:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:26,833 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:03:26,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:03:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:26,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:26,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:26,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-11-12 23:03:26,835 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:26,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:26,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1680757221, now seen corresponding path program 181 times [2021-11-12 23:03:26,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:26,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073298856] [2021-11-12 23:03:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:26,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:27,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:27,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073298856] [2021-11-12 23:03:27,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073298856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:27,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:27,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:27,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900224951] [2021-11-12 23:03:27,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:27,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:27,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:27,889 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:29,591 INFO L93 Difference]: Finished difference Result 2849 states and 8468 transitions. [2021-11-12 23:03:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:29,592 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:29,600 INFO L225 Difference]: With dead ends: 2849 [2021-11-12 23:03:29,600 INFO L226 Difference]: Without dead ends: 2830 [2021-11-12 23:03:29,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:29,601 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 294 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 931.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.15ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1082.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:29,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 47 Invalid, 1213 Unknown, 0 Unchecked, 5.15ms Time], IncrementalHoareTripleChecker [40 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 1082.75ms Time] [2021-11-12 23:03:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-11-12 23:03:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 1350. [2021-11-12 23:03:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:03:29,641 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:03:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:29,642 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:03:29,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:03:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:29,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:29,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:29,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-11-12 23:03:29,644 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:29,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 134994265, now seen corresponding path program 182 times [2021-11-12 23:03:29,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:29,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805797968] [2021-11-12 23:03:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:29,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:30,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:30,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805797968] [2021-11-12 23:03:30,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805797968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:30,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:30,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:30,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070465688] [2021-11-12 23:03:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:30,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:30,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:30,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:30,592 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:32,482 INFO L93 Difference]: Finished difference Result 2821 states and 8424 transitions. [2021-11-12 23:03:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:32,482 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:32,488 INFO L225 Difference]: With dead ends: 2821 [2021-11-12 23:03:32,488 INFO L226 Difference]: Without dead ends: 2810 [2021-11-12 23:03:32,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:32,488 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 259 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1079.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.55ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1250.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:32,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 48 Invalid, 1352 Unknown, 0 Unchecked, 5.55ms Time], IncrementalHoareTripleChecker [39 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1250.43ms Time] [2021-11-12 23:03:32,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-11-12 23:03:32,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1352. [2021-11-12 23:03:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3708364174685417) internal successors, (4554), 1351 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4554 transitions. [2021-11-12 23:03:32,545 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4554 transitions. Word has length 33 [2021-11-12 23:03:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:32,545 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4554 transitions. [2021-11-12 23:03:32,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4554 transitions. [2021-11-12 23:03:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:32,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:32,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:32,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-11-12 23:03:32,548 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:32,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1470695141, now seen corresponding path program 183 times [2021-11-12 23:03:32,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:32,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439616789] [2021-11-12 23:03:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:32,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:33,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:33,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439616789] [2021-11-12 23:03:33,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439616789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:33,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:33,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:33,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611309048] [2021-11-12 23:03:33,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:33,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:33,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:33,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:33,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:33,389 INFO L87 Difference]: Start difference. First operand 1352 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:35,253 INFO L93 Difference]: Finished difference Result 2815 states and 8421 transitions. [2021-11-12 23:03:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:35,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:35,259 INFO L225 Difference]: With dead ends: 2815 [2021-11-12 23:03:35,259 INFO L226 Difference]: Without dead ends: 2798 [2021-11-12 23:03:35,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:35,259 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 283 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1054.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1215.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:35,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 41 Invalid, 1243 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [39 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1215.32ms Time] [2021-11-12 23:03:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-11-12 23:03:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1350. [2021-11-12 23:03:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 23:03:35,311 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 23:03:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:35,311 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 23:03:35,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 23:03:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:35,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:35,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:35,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-11-12 23:03:35,315 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash 82478745, now seen corresponding path program 184 times [2021-11-12 23:03:35,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:35,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606433630] [2021-11-12 23:03:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:35,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:36,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:36,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606433630] [2021-11-12 23:03:36,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606433630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:36,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:36,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:36,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139259695] [2021-11-12 23:03:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:36,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:36,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:36,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:36,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:36,445 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:38,382 INFO L93 Difference]: Finished difference Result 2837 states and 8457 transitions. [2021-11-12 23:03:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:38,388 INFO L225 Difference]: With dead ends: 2837 [2021-11-12 23:03:38,388 INFO L226 Difference]: Without dead ends: 2820 [2021-11-12 23:03:38,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:38,389 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 253 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1073.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1240.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:38,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 46 Invalid, 1342 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [39 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1240.43ms Time] [2021-11-12 23:03:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2021-11-12 23:03:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 1356. [2021-11-12 23:03:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3653136531365315) internal successors, (4560), 1355 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4560 transitions. [2021-11-12 23:03:38,423 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4560 transitions. Word has length 33 [2021-11-12 23:03:38,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:38,424 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4560 transitions. [2021-11-12 23:03:38,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4560 transitions. [2021-11-12 23:03:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:38,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:38,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:38,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-11-12 23:03:38,426 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2058440463, now seen corresponding path program 185 times [2021-11-12 23:03:38,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:38,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565296927] [2021-11-12 23:03:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:38,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:39,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:39,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565296927] [2021-11-12 23:03:39,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565296927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:39,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:39,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:39,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412623907] [2021-11-12 23:03:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:39,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:39,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:39,435 INFO L87 Difference]: Start difference. First operand 1356 states and 4560 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:41,305 INFO L93 Difference]: Finished difference Result 2819 states and 8427 transitions. [2021-11-12 23:03:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:41,306 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:41,311 INFO L225 Difference]: With dead ends: 2819 [2021-11-12 23:03:41,311 INFO L226 Difference]: Without dead ends: 2796 [2021-11-12 23:03:41,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:41,312 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 226 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1033.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1196.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:41,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 43 Invalid, 1319 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [38 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 1196.46ms Time] [2021-11-12 23:03:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2021-11-12 23:03:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 1348. [2021-11-12 23:03:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3734224201930214) internal successors, (4544), 1347 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4544 transitions. [2021-11-12 23:03:41,349 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4544 transitions. Word has length 33 [2021-11-12 23:03:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:41,349 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4544 transitions. [2021-11-12 23:03:41,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:41,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4544 transitions. [2021-11-12 23:03:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:41,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:41,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:41,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-11-12 23:03:41,352 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:41,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2040330751, now seen corresponding path program 186 times [2021-11-12 23:03:41,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:41,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201357569] [2021-11-12 23:03:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:41,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:42,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:42,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201357569] [2021-11-12 23:03:42,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201357569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:42,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:42,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:42,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000575787] [2021-11-12 23:03:42,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:42,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:42,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:42,483 INFO L87 Difference]: Start difference. First operand 1348 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:44,363 INFO L93 Difference]: Finished difference Result 2845 states and 8471 transitions. [2021-11-12 23:03:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:44,363 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:44,368 INFO L225 Difference]: With dead ends: 2845 [2021-11-12 23:03:44,368 INFO L226 Difference]: Without dead ends: 2820 [2021-11-12 23:03:44,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:44,369 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 262 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1074.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1236.88ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:44,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 45 Invalid, 1313 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [37 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 1236.88ms Time] [2021-11-12 23:03:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2021-11-12 23:03:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 1354. [2021-11-12 23:03:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3665927568366594) internal successors, (4555), 1353 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4555 transitions. [2021-11-12 23:03:44,398 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4555 transitions. Word has length 33 [2021-11-12 23:03:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:44,398 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4555 transitions. [2021-11-12 23:03:44,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4555 transitions. [2021-11-12 23:03:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:44,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:44,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:44,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-11-12 23:03:44,400 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1022815169, now seen corresponding path program 187 times [2021-11-12 23:03:44,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:44,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398325705] [2021-11-12 23:03:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:44,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:45,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:45,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398325705] [2021-11-12 23:03:45,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398325705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:45,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:45,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:45,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570022075] [2021-11-12 23:03:45,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:45,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:45,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:45,155 INFO L87 Difference]: Start difference. First operand 1354 states and 4555 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:47,010 INFO L93 Difference]: Finished difference Result 2841 states and 8463 transitions. [2021-11-12 23:03:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:47,016 INFO L225 Difference]: With dead ends: 2841 [2021-11-12 23:03:47,016 INFO L226 Difference]: Without dead ends: 2824 [2021-11-12 23:03:47,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:47,017 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 251 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1019.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1183.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:47,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 44 Invalid, 1389 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [37 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1183.75ms Time] [2021-11-12 23:03:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-11-12 23:03:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 1360. [2021-11-12 23:03:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3598233995584987) internal successors, (4566), 1359 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4566 transitions. [2021-11-12 23:03:47,058 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4566 transitions. Word has length 33 [2021-11-12 23:03:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:47,058 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4566 transitions. [2021-11-12 23:03:47,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:47,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4566 transitions. [2021-11-12 23:03:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:47,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:47,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:47,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-11-12 23:03:47,061 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:47,061 INFO L85 PathProgramCache]: Analyzing trace with hash 986332903, now seen corresponding path program 188 times [2021-11-12 23:03:47,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:47,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012339670] [2021-11-12 23:03:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:47,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:47,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:47,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012339670] [2021-11-12 23:03:47,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012339670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:47,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:47,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:47,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334802248] [2021-11-12 23:03:47,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:47,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:47,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:47,961 INFO L87 Difference]: Start difference. First operand 1360 states and 4566 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:49,423 INFO L93 Difference]: Finished difference Result 2823 states and 8433 transitions. [2021-11-12 23:03:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:49,423 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:49,428 INFO L225 Difference]: With dead ends: 2823 [2021-11-12 23:03:49,428 INFO L226 Difference]: Without dead ends: 2794 [2021-11-12 23:03:49,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:49,429 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 222 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 792.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.41ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 920.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:49,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 38 Invalid, 1289 Unknown, 0 Unchecked, 4.41ms Time], IncrementalHoareTripleChecker [37 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 920.06ms Time] [2021-11-12 23:03:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2021-11-12 23:03:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1346. [2021-11-12 23:03:49,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.374721189591078) internal successors, (4539), 1345 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4539 transitions. [2021-11-12 23:03:49,464 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4539 transitions. Word has length 33 [2021-11-12 23:03:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:49,464 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4539 transitions. [2021-11-12 23:03:49,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4539 transitions. [2021-11-12 23:03:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:49,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:49,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:49,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-11-12 23:03:49,466 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash -988637495, now seen corresponding path program 189 times [2021-11-12 23:03:49,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:49,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723126614] [2021-11-12 23:03:49,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:49,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:50,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:50,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723126614] [2021-11-12 23:03:50,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723126614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:50,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:50,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:50,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506308911] [2021-11-12 23:03:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:50,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:50,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:50,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:50,229 INFO L87 Difference]: Start difference. First operand 1346 states and 4539 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:52,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:52,001 INFO L93 Difference]: Finished difference Result 2831 states and 8459 transitions. [2021-11-12 23:03:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:52,001 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:52,007 INFO L225 Difference]: With dead ends: 2831 [2021-11-12 23:03:52,007 INFO L226 Difference]: Without dead ends: 2810 [2021-11-12 23:03:52,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:52,007 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 218 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1036.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.66ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1202.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:52,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 43 Invalid, 1471 Unknown, 0 Unchecked, 5.66ms Time], IncrementalHoareTripleChecker [35 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 1202.57ms Time] [2021-11-12 23:03:52,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-11-12 23:03:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1358. [2021-11-12 23:03:52,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.3655121591746497) internal successors, (4567), 1357 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:52,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4567 transitions. [2021-11-12 23:03:52,044 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4567 transitions. Word has length 33 [2021-11-12 23:03:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:52,044 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4567 transitions. [2021-11-12 23:03:52,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4567 transitions. [2021-11-12 23:03:52,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:52,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:52,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:52,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-11-12 23:03:52,046 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:52,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1097023523, now seen corresponding path program 190 times [2021-11-12 23:03:52,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:52,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161226703] [2021-11-12 23:03:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:52,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:52,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:52,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161226703] [2021-11-12 23:03:52,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161226703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:52,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:52,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:52,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75342077] [2021-11-12 23:03:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:52,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:52,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:52,948 INFO L87 Difference]: Start difference. First operand 1358 states and 4567 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:54,672 INFO L93 Difference]: Finished difference Result 2849 states and 8483 transitions. [2021-11-12 23:03:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:54,678 INFO L225 Difference]: With dead ends: 2849 [2021-11-12 23:03:54,678 INFO L226 Difference]: Without dead ends: 2832 [2021-11-12 23:03:54,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:54,678 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 251 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 980.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1138.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:54,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 42 Invalid, 1313 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [36 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1138.31ms Time] [2021-11-12 23:03:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-12 23:03:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1364. [2021-11-12 23:03:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 3.358767424798239) internal successors, (4578), 1363 states have internal predecessors, (4578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4578 transitions. [2021-11-12 23:03:54,715 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4578 transitions. Word has length 33 [2021-11-12 23:03:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:54,715 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 4578 transitions. [2021-11-12 23:03:54,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4578 transitions. [2021-11-12 23:03:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:54,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:54,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:54,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-11-12 23:03:54,718 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:54,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1651136123, now seen corresponding path program 191 times [2021-11-12 23:03:54,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:54,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436404006] [2021-11-12 23:03:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:54,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:55,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:55,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436404006] [2021-11-12 23:03:55,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436404006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:55,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:55,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:55,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713277241] [2021-11-12 23:03:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:55,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:55,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:55,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:55,632 INFO L87 Difference]: Start difference. First operand 1364 states and 4578 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:57,231 INFO L93 Difference]: Finished difference Result 2831 states and 8453 transitions. [2021-11-12 23:03:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:03:57,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:03:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:57,238 INFO L225 Difference]: With dead ends: 2831 [2021-11-12 23:03:57,238 INFO L226 Difference]: Without dead ends: 2804 [2021-11-12 23:03:57,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:03:57,238 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 255 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 878.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.08ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1021.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:57,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 36 Invalid, 1168 Unknown, 0 Unchecked, 5.08ms Time], IncrementalHoareTripleChecker [36 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1021.90ms Time] [2021-11-12 23:03:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-12 23:03:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1352. [2021-11-12 23:03:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3678756476683938) internal successors, (4550), 1351 states have internal predecessors, (4550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4550 transitions. [2021-11-12 23:03:57,301 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4550 transitions. Word has length 33 [2021-11-12 23:03:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:57,301 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4550 transitions. [2021-11-12 23:03:57,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:03:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4550 transitions. [2021-11-12 23:03:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:03:57,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:57,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:03:57,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-11-12 23:03:57,305 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:03:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash -74221597, now seen corresponding path program 192 times [2021-11-12 23:03:57,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:03:57,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933925136] [2021-11-12 23:03:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:57,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:03:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:03:58,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:03:58,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933925136] [2021-11-12 23:03:58,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933925136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:03:58,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:03:58,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:03:58,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878708625] [2021-11-12 23:03:58,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:03:58,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:03:58,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:03:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:03:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:03:58,257 INFO L87 Difference]: Start difference. First operand 1352 states and 4550 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:00,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:00,138 INFO L93 Difference]: Finished difference Result 2835 states and 8461 transitions. [2021-11-12 23:04:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:04:00,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:00,144 INFO L225 Difference]: With dead ends: 2835 [2021-11-12 23:04:00,144 INFO L226 Difference]: Without dead ends: 2810 [2021-11-12 23:04:00,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:04:00,144 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 227 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1090.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1257.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:00,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 41 Invalid, 1357 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [35 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 1257.34ms Time] [2021-11-12 23:04:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-11-12 23:04:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1358. [2021-11-12 23:04:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.361090641120118) internal successors, (4561), 1357 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4561 transitions. [2021-11-12 23:04:00,180 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4561 transitions. Word has length 33 [2021-11-12 23:04:00,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:00,180 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4561 transitions. [2021-11-12 23:04:00,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:00,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4561 transitions. [2021-11-12 23:04:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:00,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:00,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:00,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-11-12 23:04:00,184 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 785842225, now seen corresponding path program 193 times [2021-11-12 23:04:00,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:00,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932384155] [2021-11-12 23:04:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:00,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:01,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:01,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932384155] [2021-11-12 23:04:01,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932384155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:01,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:01,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:01,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769499729] [2021-11-12 23:04:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:01,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:01,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:01,078 INFO L87 Difference]: Start difference. First operand 1358 states and 4561 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:02,942 INFO L93 Difference]: Finished difference Result 2849 states and 8477 transitions. [2021-11-12 23:04:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:04:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:02,948 INFO L225 Difference]: With dead ends: 2849 [2021-11-12 23:04:02,948 INFO L226 Difference]: Without dead ends: 2832 [2021-11-12 23:04:02,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:04:02,949 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 243 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1043.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.69ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1212.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:02,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 41 Invalid, 1383 Unknown, 0 Unchecked, 5.69ms Time], IncrementalHoareTripleChecker [36 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1212.63ms Time] [2021-11-12 23:04:02,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-12 23:04:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1364. [2021-11-12 23:04:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 3.3543653705062364) internal successors, (4572), 1363 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:02,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 4572 transitions. [2021-11-12 23:04:02,984 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 4572 transitions. Word has length 33 [2021-11-12 23:04:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:02,985 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 4572 transitions. [2021-11-12 23:04:02,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:02,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 4572 transitions. [2021-11-12 23:04:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:02,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:02,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:02,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-11-12 23:04:02,987 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:02,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1339954825, now seen corresponding path program 194 times [2021-11-12 23:04:02,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:02,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178223148] [2021-11-12 23:04:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:02,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:03,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:03,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178223148] [2021-11-12 23:04:03,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178223148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:03,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:03,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:03,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654869228] [2021-11-12 23:04:03,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:03,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:03,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:03,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:03,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:03,844 INFO L87 Difference]: Start difference. First operand 1364 states and 4572 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:05,707 INFO L93 Difference]: Finished difference Result 2831 states and 8447 transitions. [2021-11-12 23:04:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 23:04:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:05,713 INFO L225 Difference]: With dead ends: 2831 [2021-11-12 23:04:05,713 INFO L226 Difference]: Without dead ends: 2796 [2021-11-12 23:04:05,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:04:05,713 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1062.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1229.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:05,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 37 Invalid, 1372 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [35 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 1229.61ms Time] [2021-11-12 23:04:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2021-11-12 23:04:05,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 1344. [2021-11-12 23:04:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.37602382725242) internal successors, (4534), 1343 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4534 transitions. [2021-11-12 23:04:05,750 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4534 transitions. Word has length 33 [2021-11-12 23:04:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:05,750 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 4534 transitions. [2021-11-12 23:04:05,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:05,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4534 transitions. [2021-11-12 23:04:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:05,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:05,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:05,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-11-12 23:04:05,753 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2055769805, now seen corresponding path program 195 times [2021-11-12 23:04:05,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:05,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113521323] [2021-11-12 23:04:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:05,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:06,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:06,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113521323] [2021-11-12 23:04:06,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113521323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:06,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:06,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:06,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755853559] [2021-11-12 23:04:06,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:06,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:06,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:06,697 INFO L87 Difference]: Start difference. First operand 1344 states and 4534 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:08,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:08,783 INFO L93 Difference]: Finished difference Result 2847 states and 8472 transitions. [2021-11-12 23:04:08,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:04:08,783 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:08,789 INFO L225 Difference]: With dead ends: 2847 [2021-11-12 23:04:08,789 INFO L226 Difference]: Without dead ends: 2836 [2021-11-12 23:04:08,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:04:08,790 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 248 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1170.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.96ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1351.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:08,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 58 Invalid, 1465 Unknown, 0 Unchecked, 5.96ms Time], IncrementalHoareTripleChecker [46 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1351.32ms Time] [2021-11-12 23:04:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2021-11-12 23:04:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 1352. [2021-11-12 23:04:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 23:04:08,826 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 23:04:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:08,826 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 23:04:08,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 23:04:08,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:08,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:08,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:08,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-11-12 23:04:08,829 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:08,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:08,829 INFO L85 PathProgramCache]: Analyzing trace with hash 633508085, now seen corresponding path program 196 times [2021-11-12 23:04:08,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:08,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197142664] [2021-11-12 23:04:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:08,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:09,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:09,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197142664] [2021-11-12 23:04:09,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197142664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:09,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:09,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:09,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909505383] [2021-11-12 23:04:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:09,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:09,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:09,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:09,825 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:12,076 INFO L93 Difference]: Finished difference Result 2851 states and 8478 transitions. [2021-11-12 23:04:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:04:12,077 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:12,082 INFO L225 Difference]: With dead ends: 2851 [2021-11-12 23:04:12,082 INFO L226 Difference]: Without dead ends: 2834 [2021-11-12 23:04:12,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:04:12,083 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 232 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1215.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.06ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1405.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:12,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 57 Invalid, 1557 Unknown, 0 Unchecked, 6.06ms Time], IncrementalHoareTripleChecker [44 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 1405.38ms Time] [2021-11-12 23:04:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-11-12 23:04:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1350. [2021-11-12 23:04:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.375092661230541) internal successors, (4553), 1349 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4553 transitions. [2021-11-12 23:04:12,120 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4553 transitions. Word has length 33 [2021-11-12 23:04:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:12,120 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4553 transitions. [2021-11-12 23:04:12,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4553 transitions. [2021-11-12 23:04:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:12,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:12,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:12,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-11-12 23:04:12,123 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:12,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:12,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1866279107, now seen corresponding path program 197 times [2021-11-12 23:04:12,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:12,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296472625] [2021-11-12 23:04:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:12,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:13,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:13,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296472625] [2021-11-12 23:04:13,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296472625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:13,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:13,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:13,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395376743] [2021-11-12 23:04:13,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:13,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:13,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:13,195 INFO L87 Difference]: Start difference. First operand 1350 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:15,388 INFO L93 Difference]: Finished difference Result 2855 states and 8484 transitions. [2021-11-12 23:04:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:04:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:15,395 INFO L225 Difference]: With dead ends: 2855 [2021-11-12 23:04:15,395 INFO L226 Difference]: Without dead ends: 2832 [2021-11-12 23:04:15,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:04:15,395 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 246 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1174.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.84ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1354.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:15,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 43 Invalid, 1328 Unknown, 0 Unchecked, 5.84ms Time], IncrementalHoareTripleChecker [45 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1354.78ms Time] [2021-11-12 23:04:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-12 23:04:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1348. [2021-11-12 23:04:15,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.376391982182628) internal successors, (4548), 1347 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4548 transitions. [2021-11-12 23:04:15,454 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4548 transitions. Word has length 33 [2021-11-12 23:04:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:15,454 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4548 transitions. [2021-11-12 23:04:15,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4548 transitions. [2021-11-12 23:04:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:15,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:15,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:15,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-11-12 23:04:15,457 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:15,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1769769667, now seen corresponding path program 198 times [2021-11-12 23:04:15,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:15,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319144015] [2021-11-12 23:04:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:15,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:16,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:16,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319144015] [2021-11-12 23:04:16,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319144015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:16,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:16,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:16,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001900220] [2021-11-12 23:04:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:16,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:16,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:16,368 INFO L87 Difference]: Start difference. First operand 1348 states and 4548 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:18,494 INFO L93 Difference]: Finished difference Result 2859 states and 8502 transitions. [2021-11-12 23:04:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:04:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:18,500 INFO L225 Difference]: With dead ends: 2859 [2021-11-12 23:04:18,500 INFO L226 Difference]: Without dead ends: 2848 [2021-11-12 23:04:18,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:04:18,500 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 262 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1096.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1270.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:18,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 56 Invalid, 1416 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [49 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1270.99ms Time] [2021-11-12 23:04:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2021-11-12 23:04:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1352. [2021-11-12 23:04:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 23:04:18,545 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 23:04:18,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:18,545 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 23:04:18,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 23:04:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:18,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:18,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:18,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-11-12 23:04:18,550 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:18,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1234539865, now seen corresponding path program 199 times [2021-11-12 23:04:18,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:18,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365496160] [2021-11-12 23:04:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:18,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:19,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:19,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365496160] [2021-11-12 23:04:19,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365496160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:19,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:19,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:19,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813442898] [2021-11-12 23:04:19,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:19,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:19,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:19,555 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:21,782 INFO L93 Difference]: Finished difference Result 2873 states and 8527 transitions. [2021-11-12 23:04:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 23:04:21,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:21,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:21,787 INFO L225 Difference]: With dead ends: 2873 [2021-11-12 23:04:21,788 INFO L226 Difference]: Without dead ends: 2854 [2021-11-12 23:04:21,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:04:21,788 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1139.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.89ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1322.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:21,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 63 Invalid, 1477 Unknown, 0 Unchecked, 5.89ms Time], IncrementalHoareTripleChecker [50 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1322.66ms Time] [2021-11-12 23:04:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-11-12 23:04:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1350. [2021-11-12 23:04:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.375092661230541) internal successors, (4553), 1349 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4553 transitions. [2021-11-12 23:04:21,822 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4553 transitions. Word has length 33 [2021-11-12 23:04:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:21,823 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4553 transitions. [2021-11-12 23:04:21,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4553 transitions. [2021-11-12 23:04:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:21,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:21,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:21,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-11-12 23:04:21,825 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash 581211621, now seen corresponding path program 200 times [2021-11-12 23:04:21,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:21,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480646849] [2021-11-12 23:04:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:21,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:22,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:22,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480646849] [2021-11-12 23:04:22,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480646849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:22,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:22,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:22,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221774913] [2021-11-12 23:04:22,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:22,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:22,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:22,717 INFO L87 Difference]: Start difference. First operand 1350 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:24,798 INFO L93 Difference]: Finished difference Result 2865 states and 8500 transitions. [2021-11-12 23:04:24,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:04:24,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:24,804 INFO L225 Difference]: With dead ends: 2865 [2021-11-12 23:04:24,804 INFO L226 Difference]: Without dead ends: 2854 [2021-11-12 23:04:24,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:04:24,804 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 268 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1092.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.39ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1292.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:24,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 52 Invalid, 1401 Unknown, 0 Unchecked, 5.39ms Time], IncrementalHoareTripleChecker [48 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1292.76ms Time] [2021-11-12 23:04:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-11-12 23:04:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1352. [2021-11-12 23:04:24,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:24,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:04:24,841 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:04:24,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:24,841 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:04:24,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:24,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:04:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:24,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:24,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:24,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-11-12 23:04:24,844 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:24,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1024477785, now seen corresponding path program 201 times [2021-11-12 23:04:24,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:24,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955457666] [2021-11-12 23:04:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:24,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:25,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:25,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955457666] [2021-11-12 23:04:25,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955457666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:25,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:25,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:25,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27081165] [2021-11-12 23:04:25,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:25,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:25,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:25,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:25,810 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:27,860 INFO L93 Difference]: Finished difference Result 2859 states and 8497 transitions. [2021-11-12 23:04:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:04:27,860 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:27,866 INFO L225 Difference]: With dead ends: 2859 [2021-11-12 23:04:27,866 INFO L226 Difference]: Without dead ends: 2842 [2021-11-12 23:04:27,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:04:27,867 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 280 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1093.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1267.29ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:27,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 48 Invalid, 1429 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [46 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1267.29ms Time] [2021-11-12 23:04:27,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-11-12 23:04:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1350. [2021-11-12 23:04:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:04:27,902 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:04:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:27,903 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:04:27,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:04:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:27,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:27,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:27,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-11-12 23:04:27,905 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:27,905 INFO L85 PathProgramCache]: Analyzing trace with hash 528696101, now seen corresponding path program 202 times [2021-11-12 23:04:27,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:27,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048677612] [2021-11-12 23:04:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:27,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:28,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:28,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048677612] [2021-11-12 23:04:28,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048677612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:28,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:28,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:28,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298511564] [2021-11-12 23:04:28,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:28,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:28,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:28,767 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:30,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:30,796 INFO L93 Difference]: Finished difference Result 2875 states and 8522 transitions. [2021-11-12 23:04:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:04:30,797 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:30,802 INFO L225 Difference]: With dead ends: 2875 [2021-11-12 23:04:30,802 INFO L226 Difference]: Without dead ends: 2858 [2021-11-12 23:04:30,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=193, Invalid=407, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:04:30,803 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 245 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1057.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.43ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1230.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:30,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 51 Invalid, 1394 Unknown, 0 Unchecked, 5.43ms Time], IncrementalHoareTripleChecker [48 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1230.75ms Time] [2021-11-12 23:04:30,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2021-11-12 23:04:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 1356. [2021-11-12 23:04:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.366789667896679) internal successors, (4562), 1355 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4562 transitions. [2021-11-12 23:04:30,839 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4562 transitions. Word has length 33 [2021-11-12 23:04:30,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:30,840 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4562 transitions. [2021-11-12 23:04:30,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4562 transitions. [2021-11-12 23:04:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:30,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:30,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:30,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-11-12 23:04:30,842 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1612223107, now seen corresponding path program 203 times [2021-11-12 23:04:30,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:30,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997093344] [2021-11-12 23:04:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:30,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:31,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:31,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997093344] [2021-11-12 23:04:31,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997093344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:31,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:31,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:31,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037696653] [2021-11-12 23:04:31,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:31,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:31,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:31,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:31,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:31,797 INFO L87 Difference]: Start difference. First operand 1356 states and 4562 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:33,809 INFO L93 Difference]: Finished difference Result 2863 states and 8503 transitions. [2021-11-12 23:04:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:04:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:33,815 INFO L225 Difference]: With dead ends: 2863 [2021-11-12 23:04:33,815 INFO L226 Difference]: Without dead ends: 2840 [2021-11-12 23:04:33,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:04:33,815 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 242 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1071.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.61ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1247.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:33,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 46 Invalid, 1454 Unknown, 0 Unchecked, 5.61ms Time], IncrementalHoareTripleChecker [46 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1247.60ms Time] [2021-11-12 23:04:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-11-12 23:04:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1348. [2021-11-12 23:04:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.374907201187825) internal successors, (4546), 1347 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4546 transitions. [2021-11-12 23:04:33,879 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4546 transitions. Word has length 33 [2021-11-12 23:04:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:33,879 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4546 transitions. [2021-11-12 23:04:33,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4546 transitions. [2021-11-12 23:04:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:33,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:33,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:33,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-11-12 23:04:33,882 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1388452391, now seen corresponding path program 204 times [2021-11-12 23:04:33,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:33,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018581362] [2021-11-12 23:04:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:33,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:34,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:34,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018581362] [2021-11-12 23:04:34,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018581362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:34,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:34,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:34,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92742065] [2021-11-12 23:04:34,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:34,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:34,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:34,897 INFO L87 Difference]: Start difference. First operand 1348 states and 4546 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:37,027 INFO L93 Difference]: Finished difference Result 2885 states and 8548 transitions. [2021-11-12 23:04:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:04:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:37,032 INFO L225 Difference]: With dead ends: 2885 [2021-11-12 23:04:37,033 INFO L226 Difference]: Without dead ends: 2864 [2021-11-12 23:04:37,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:04:37,033 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 250 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1177.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1352.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:37,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 50 Invalid, 1372 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [47 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1352.30ms Time] [2021-11-12 23:04:37,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2021-11-12 23:04:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1354. [2021-11-12 23:04:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.368070953436807) internal successors, (4557), 1353 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4557 transitions. [2021-11-12 23:04:37,068 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4557 transitions. Word has length 33 [2021-11-12 23:04:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:37,068 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4557 transitions. [2021-11-12 23:04:37,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4557 transitions. [2021-11-12 23:04:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:37,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:37,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:37,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-11-12 23:04:37,071 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -540752859, now seen corresponding path program 205 times [2021-11-12 23:04:37,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:37,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060867916] [2021-11-12 23:04:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:37,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:38,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:38,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060867916] [2021-11-12 23:04:38,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060867916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:38,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:38,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:38,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624716705] [2021-11-12 23:04:38,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:38,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:38,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:38,028 INFO L87 Difference]: Start difference. First operand 1354 states and 4557 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:40,132 INFO L93 Difference]: Finished difference Result 2895 states and 8567 transitions. [2021-11-12 23:04:40,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 23:04:40,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:40,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:40,138 INFO L225 Difference]: With dead ends: 2895 [2021-11-12 23:04:40,138 INFO L226 Difference]: Without dead ends: 2878 [2021-11-12 23:04:40,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=231, Invalid=471, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:04:40,139 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 269 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1056.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.28ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1221.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:40,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 50 Invalid, 1350 Unknown, 0 Unchecked, 5.28ms Time], IncrementalHoareTripleChecker [49 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 1221.79ms Time] [2021-11-12 23:04:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2021-11-12 23:04:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 1360. [2021-11-12 23:04:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3612950699043416) internal successors, (4568), 1359 states have internal predecessors, (4568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4568 transitions. [2021-11-12 23:04:40,176 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4568 transitions. Word has length 33 [2021-11-12 23:04:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:40,176 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4568 transitions. [2021-11-12 23:04:40,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4568 transitions. [2021-11-12 23:04:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:40,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:40,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:40,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-11-12 23:04:40,179 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash 13359741, now seen corresponding path program 206 times [2021-11-12 23:04:40,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:40,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217209989] [2021-11-12 23:04:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:40,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:41,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:41,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217209989] [2021-11-12 23:04:41,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217209989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:41,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:41,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:41,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916313974] [2021-11-12 23:04:41,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:41,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:41,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:41,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:41,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:41,118 INFO L87 Difference]: Start difference. First operand 1360 states and 4568 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:43,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:43,104 INFO L93 Difference]: Finished difference Result 2885 states and 8542 transitions. [2021-11-12 23:04:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:04:43,105 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:43,110 INFO L225 Difference]: With dead ends: 2885 [2021-11-12 23:04:43,111 INFO L226 Difference]: Without dead ends: 2856 [2021-11-12 23:04:43,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:04:43,111 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1041.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.32ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1211.35ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:43,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 50 Invalid, 1392 Unknown, 0 Unchecked, 5.32ms Time], IncrementalHoareTripleChecker [48 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1211.35ms Time] [2021-11-12 23:04:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2021-11-12 23:04:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 1346. [2021-11-12 23:04:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.3762081784386617) internal successors, (4541), 1345 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4541 transitions. [2021-11-12 23:04:43,147 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4541 transitions. Word has length 33 [2021-11-12 23:04:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:43,147 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4541 transitions. [2021-11-12 23:04:43,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4541 transitions. [2021-11-12 23:04:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:43,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:43,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:43,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-11-12 23:04:43,150 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 971740313, now seen corresponding path program 207 times [2021-11-12 23:04:43,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:43,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293812908] [2021-11-12 23:04:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:43,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:44,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:44,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293812908] [2021-11-12 23:04:44,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293812908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:44,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:44,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:44,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903330385] [2021-11-12 23:04:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:44,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:44,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:44,068 INFO L87 Difference]: Start difference. First operand 1346 states and 4541 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:45,904 INFO L93 Difference]: Finished difference Result 2773 states and 8318 transitions. [2021-11-12 23:04:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:04:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:45,909 INFO L225 Difference]: With dead ends: 2773 [2021-11-12 23:04:45,909 INFO L226 Difference]: Without dead ends: 2762 [2021-11-12 23:04:45,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:04:45,910 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 239 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1050.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1212.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:45,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 49 Invalid, 1452 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [42 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1212.52ms Time] [2021-11-12 23:04:45,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-11-12 23:04:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1352. [2021-11-12 23:04:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:04:45,940 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:04:45,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:45,940 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:04:45,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:04:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:45,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:45,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:45,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-11-12 23:04:45,943 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash -633949093, now seen corresponding path program 208 times [2021-11-12 23:04:45,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:45,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371543159] [2021-11-12 23:04:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:45,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:46,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:46,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:46,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371543159] [2021-11-12 23:04:46,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371543159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:46,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:46,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:46,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821920662] [2021-11-12 23:04:46,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:46,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:46,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:46,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:46,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:46,706 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:48,552 INFO L93 Difference]: Finished difference Result 2777 states and 8324 transitions. [2021-11-12 23:04:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:04:48,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:48,558 INFO L225 Difference]: With dead ends: 2777 [2021-11-12 23:04:48,558 INFO L226 Difference]: Without dead ends: 2760 [2021-11-12 23:04:48,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:04:48,558 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 284 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 996.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.19ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1148.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:48,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 44 Invalid, 1387 Unknown, 0 Unchecked, 5.19ms Time], IncrementalHoareTripleChecker [42 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1148.07ms Time] [2021-11-12 23:04:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-11-12 23:04:48,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1350. [2021-11-12 23:04:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:04:48,609 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:04:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:48,609 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:04:48,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:04:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:48,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:48,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:48,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-11-12 23:04:48,612 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:48,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1161231011, now seen corresponding path program 209 times [2021-11-12 23:04:48,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:48,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531105767] [2021-11-12 23:04:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:48,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:49,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:49,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531105767] [2021-11-12 23:04:49,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531105767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:49,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:49,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:49,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335922732] [2021-11-12 23:04:49,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:49,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:49,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:49,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:49,581 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:51,670 INFO L93 Difference]: Finished difference Result 2781 states and 8330 transitions. [2021-11-12 23:04:51,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:04:51,671 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:51,676 INFO L225 Difference]: With dead ends: 2781 [2021-11-12 23:04:51,676 INFO L226 Difference]: Without dead ends: 2758 [2021-11-12 23:04:51,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:04:51,677 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 256 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1154.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.98ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1330.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:51,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 36 Invalid, 1407 Unknown, 0 Unchecked, 5.98ms Time], IncrementalHoareTripleChecker [39 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1330.43ms Time] [2021-11-12 23:04:51,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-11-12 23:04:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1348. [2021-11-12 23:04:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.374907201187825) internal successors, (4546), 1347 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4546 transitions. [2021-11-12 23:04:51,711 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4546 transitions. Word has length 33 [2021-11-12 23:04:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:51,711 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4546 transitions. [2021-11-12 23:04:51,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4546 transitions. [2021-11-12 23:04:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:51,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:51,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:51,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-11-12 23:04:51,714 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2060438173, now seen corresponding path program 210 times [2021-11-12 23:04:51,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:51,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628511729] [2021-11-12 23:04:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:51,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:52,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:52,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628511729] [2021-11-12 23:04:52,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628511729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:52,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:52,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:52,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136667983] [2021-11-12 23:04:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:52,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:52,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:52,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:52,476 INFO L87 Difference]: Start difference. First operand 1348 states and 4546 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:54,539 INFO L93 Difference]: Finished difference Result 2769 states and 8314 transitions. [2021-11-12 23:04:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:04:54,540 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:54,545 INFO L225 Difference]: With dead ends: 2769 [2021-11-12 23:04:54,545 INFO L226 Difference]: Without dead ends: 2758 [2021-11-12 23:04:54,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:04:54,545 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 261 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1160.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1342.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:54,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 41 Invalid, 1513 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [42 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1342.45ms Time] [2021-11-12 23:04:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-11-12 23:04:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1352. [2021-11-12 23:04:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:04:54,581 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:04:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:54,581 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:04:54,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:04:54,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:54,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:54,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:54,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-11-12 23:04:54,584 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:54,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -987352793, now seen corresponding path program 211 times [2021-11-12 23:04:54,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:54,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595693813] [2021-11-12 23:04:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:54,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:55,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:55,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595693813] [2021-11-12 23:04:55,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595693813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:55,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:55,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:55,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534117910] [2021-11-12 23:04:55,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:55,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:55,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:55,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:55,505 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:04:57,557 INFO L93 Difference]: Finished difference Result 2771 states and 8316 transitions. [2021-11-12 23:04:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:04:57,557 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:04:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:04:57,563 INFO L225 Difference]: With dead ends: 2771 [2021-11-12 23:04:57,563 INFO L226 Difference]: Without dead ends: 2756 [2021-11-12 23:04:57,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:04:57,563 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 271 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1148.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1352.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:04:57,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 39 Invalid, 1419 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [45 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1352.31ms Time] [2021-11-12 23:04:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-11-12 23:04:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1350. [2021-11-12 23:04:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:04:57,600 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:04:57,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:04:57,600 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:04:57,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:04:57,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:04:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:04:57,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:04:57,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:04:57,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-11-12 23:04:57,603 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:04:57,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:04:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash 796889381, now seen corresponding path program 212 times [2021-11-12 23:04:57,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:04:57,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098029735] [2021-11-12 23:04:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:04:57,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:04:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:04:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:04:58,565 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:04:58,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098029735] [2021-11-12 23:04:58,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098029735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:04:58,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:04:58,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:04:58,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468912289] [2021-11-12 23:04:58,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:04:58,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:04:58,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:04:58,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:04:58,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:04:58,566 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:00,674 INFO L93 Difference]: Finished difference Result 2781 states and 8324 transitions. [2021-11-12 23:05:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:00,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:00,680 INFO L225 Difference]: With dead ends: 2781 [2021-11-12 23:05:00,680 INFO L226 Difference]: Without dead ends: 2770 [2021-11-12 23:05:00,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:00,680 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 260 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1213.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.22ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1397.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:00,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 48 Invalid, 1458 Unknown, 0 Unchecked, 6.22ms Time], IncrementalHoareTripleChecker [44 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1397.39ms Time] [2021-11-12 23:05:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2021-11-12 23:05:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1352. [2021-11-12 23:05:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3708364174685417) internal successors, (4554), 1351 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4554 transitions. [2021-11-12 23:05:00,717 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4554 transitions. Word has length 33 [2021-11-12 23:05:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:00,717 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4554 transitions. [2021-11-12 23:05:00,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4554 transitions. [2021-11-12 23:05:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:00,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:00,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:00,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-11-12 23:05:00,720 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash -808800025, now seen corresponding path program 213 times [2021-11-12 23:05:00,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:00,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695030071] [2021-11-12 23:05:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:00,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:01,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:01,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695030071] [2021-11-12 23:05:01,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695030071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:01,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:01,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:01,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735752933] [2021-11-12 23:05:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:01,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:01,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:01,722 INFO L87 Difference]: Start difference. First operand 1352 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:03,784 INFO L93 Difference]: Finished difference Result 2775 states and 8321 transitions. [2021-11-12 23:05:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:03,790 INFO L225 Difference]: With dead ends: 2775 [2021-11-12 23:05:03,790 INFO L226 Difference]: Without dead ends: 2758 [2021-11-12 23:05:03,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:03,791 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 285 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1136.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1311.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:03,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 43 Invalid, 1393 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [44 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1311.73ms Time] [2021-11-12 23:05:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-11-12 23:05:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1350. [2021-11-12 23:05:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 23:05:03,827 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 23:05:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:03,828 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 23:05:03,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 23:05:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:03,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:03,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:03,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-11-12 23:05:03,830 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash 775883173, now seen corresponding path program 214 times [2021-11-12 23:05:03,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:03,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551224644] [2021-11-12 23:05:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:03,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:04,763 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:04,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551224644] [2021-11-12 23:05:04,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551224644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:04,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:04,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:04,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53074135] [2021-11-12 23:05:04,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:04,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:04,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:04,764 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:06,868 INFO L93 Difference]: Finished difference Result 2775 states and 8323 transitions. [2021-11-12 23:05:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:06,895 INFO L225 Difference]: With dead ends: 2775 [2021-11-12 23:05:06,895 INFO L226 Difference]: Without dead ends: 2762 [2021-11-12 23:05:06,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:06,895 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 277 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1182.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.16ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1367.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:06,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 40 Invalid, 1489 Unknown, 0 Unchecked, 6.16ms Time], IncrementalHoareTripleChecker [42 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1367.63ms Time] [2021-11-12 23:05:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-11-12 23:05:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1354. [2021-11-12 23:05:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.367331855136733) internal successors, (4556), 1353 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4556 transitions. [2021-11-12 23:05:06,929 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4556 transitions. Word has length 33 [2021-11-12 23:05:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:06,929 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4556 transitions. [2021-11-12 23:05:06,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4556 transitions. [2021-11-12 23:05:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:06,931 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:06,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:06,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-11-12 23:05:06,932 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1902891613, now seen corresponding path program 215 times [2021-11-12 23:05:06,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:06,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510366099] [2021-11-12 23:05:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:06,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:07,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:07,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510366099] [2021-11-12 23:05:07,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510366099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:07,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:07,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:07,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583843121] [2021-11-12 23:05:07,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:07,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:07,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:07,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:07,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:07,811 INFO L87 Difference]: Start difference. First operand 1354 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:09,824 INFO L93 Difference]: Finished difference Result 2761 states and 8303 transitions. [2021-11-12 23:05:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:09,829 INFO L225 Difference]: With dead ends: 2761 [2021-11-12 23:05:09,830 INFO L226 Difference]: Without dead ends: 2740 [2021-11-12 23:05:09,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:09,830 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 235 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1073.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.68ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1246.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:09,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 43 Invalid, 1410 Unknown, 0 Unchecked, 5.68ms Time], IncrementalHoareTripleChecker [43 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1246.34ms Time] [2021-11-12 23:05:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-11-12 23:05:09,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 1348. [2021-11-12 23:05:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3734224201930214) internal successors, (4544), 1347 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4544 transitions. [2021-11-12 23:05:09,865 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4544 transitions. Word has length 33 [2021-11-12 23:05:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:09,865 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4544 transitions. [2021-11-12 23:05:09,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4544 transitions. [2021-11-12 23:05:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:09,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:09,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:09,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-11-12 23:05:09,868 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:09,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1604130151, now seen corresponding path program 216 times [2021-11-12 23:05:09,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:09,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38942584] [2021-11-12 23:05:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:09,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:10,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:10,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38942584] [2021-11-12 23:05:10,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38942584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:10,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:10,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:10,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495132505] [2021-11-12 23:05:10,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:10,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:10,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:10,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:10,928 INFO L87 Difference]: Start difference. First operand 1348 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:13,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:13,076 INFO L93 Difference]: Finished difference Result 2781 states and 8333 transitions. [2021-11-12 23:05:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:13,076 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:13,082 INFO L225 Difference]: With dead ends: 2781 [2021-11-12 23:05:13,082 INFO L226 Difference]: Without dead ends: 2760 [2021-11-12 23:05:13,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:13,082 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 248 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1281.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.04ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1471.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:13,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 38 Invalid, 1505 Unknown, 0 Unchecked, 6.04ms Time], IncrementalHoareTripleChecker [40 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1471.64ms Time] [2021-11-12 23:05:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-11-12 23:05:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1352. [2021-11-12 23:05:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.368615840118431) internal successors, (4551), 1351 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4551 transitions. [2021-11-12 23:05:13,119 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4551 transitions. Word has length 33 [2021-11-12 23:05:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:13,119 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4551 transitions. [2021-11-12 23:05:13,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4551 transitions. [2021-11-12 23:05:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:13,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:13,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:13,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-11-12 23:05:13,121 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash 662220539, now seen corresponding path program 217 times [2021-11-12 23:05:13,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:13,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967726894] [2021-11-12 23:05:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:13,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:13,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:13,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:13,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967726894] [2021-11-12 23:05:13,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967726894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:13,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:13,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:13,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679044296] [2021-11-12 23:05:13,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:13,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:13,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:13,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:13,981 INFO L87 Difference]: Start difference. First operand 1352 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:15,981 INFO L93 Difference]: Finished difference Result 2777 states and 8325 transitions. [2021-11-12 23:05:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:15,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:15,987 INFO L225 Difference]: With dead ends: 2777 [2021-11-12 23:05:15,987 INFO L226 Difference]: Without dead ends: 2764 [2021-11-12 23:05:15,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:15,988 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1124.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1301.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:15,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 40 Invalid, 1508 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [41 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1301.95ms Time] [2021-11-12 23:05:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-11-12 23:05:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 1356. [2021-11-12 23:05:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.363837638376384) internal successors, (4558), 1355 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4558 transitions. [2021-11-12 23:05:16,022 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4558 transitions. Word has length 33 [2021-11-12 23:05:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:16,022 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4558 transitions. [2021-11-12 23:05:16,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4558 transitions. [2021-11-12 23:05:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:16,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:16,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:16,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-11-12 23:05:16,025 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:16,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1977435527, now seen corresponding path program 218 times [2021-11-12 23:05:16,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:16,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116010804] [2021-11-12 23:05:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:16,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:16,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:16,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116010804] [2021-11-12 23:05:16,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116010804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:16,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:16,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:16,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081811850] [2021-11-12 23:05:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:16,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:16,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:16,952 INFO L87 Difference]: Start difference. First operand 1356 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:18,855 INFO L93 Difference]: Finished difference Result 2763 states and 8305 transitions. [2021-11-12 23:05:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:18,861 INFO L225 Difference]: With dead ends: 2763 [2021-11-12 23:05:18,862 INFO L226 Difference]: Without dead ends: 2738 [2021-11-12 23:05:18,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:18,862 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 232 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1052.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.27ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1218.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:18,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 41 Invalid, 1410 Unknown, 0 Unchecked, 5.27ms Time], IncrementalHoareTripleChecker [42 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1218.47ms Time] [2021-11-12 23:05:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-12 23:05:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1346. [2021-11-12 23:05:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.374721189591078) internal successors, (4539), 1345 states have internal predecessors, (4539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4539 transitions. [2021-11-12 23:05:18,897 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4539 transitions. Word has length 33 [2021-11-12 23:05:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:18,897 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4539 transitions. [2021-11-12 23:05:18,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4539 transitions. [2021-11-12 23:05:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:18,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:18,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:18,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-11-12 23:05:18,900 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:18,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1278022221, now seen corresponding path program 219 times [2021-11-12 23:05:18,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:18,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631456917] [2021-11-12 23:05:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:18,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:19,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:19,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631456917] [2021-11-12 23:05:19,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631456917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:19,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:19,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:19,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805757371] [2021-11-12 23:05:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:19,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:19,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:19,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:19,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:19,847 INFO L87 Difference]: Start difference. First operand 1346 states and 4539 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:22,021 INFO L93 Difference]: Finished difference Result 2829 states and 8445 transitions. [2021-11-12 23:05:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:05:22,022 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:22,027 INFO L225 Difference]: With dead ends: 2829 [2021-11-12 23:05:22,028 INFO L226 Difference]: Without dead ends: 2818 [2021-11-12 23:05:22,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:05:22,028 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 234 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1155.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1341.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:22,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 50 Invalid, 1572 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [43 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1341.72ms Time] [2021-11-12 23:05:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-11-12 23:05:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1352. [2021-11-12 23:05:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.37379718726869) internal successors, (4558), 1351 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4558 transitions. [2021-11-12 23:05:22,091 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4558 transitions. Word has length 33 [2021-11-12 23:05:22,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:22,091 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4558 transitions. [2021-11-12 23:05:22,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4558 transitions. [2021-11-12 23:05:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:22,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:22,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:22,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-11-12 23:05:22,094 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:22,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash -742792419, now seen corresponding path program 220 times [2021-11-12 23:05:22,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:22,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472824284] [2021-11-12 23:05:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:22,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:23,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:23,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472824284] [2021-11-12 23:05:23,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472824284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:23,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:23,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:23,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695859288] [2021-11-12 23:05:23,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:23,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:23,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:23,078 INFO L87 Difference]: Start difference. First operand 1352 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:25,501 INFO L93 Difference]: Finished difference Result 2843 states and 8470 transitions. [2021-11-12 23:05:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 23:05:25,501 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:25,506 INFO L225 Difference]: With dead ends: 2843 [2021-11-12 23:05:25,507 INFO L226 Difference]: Without dead ends: 2824 [2021-11-12 23:05:25,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:05:25,507 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 253 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1236.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1432.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:25,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 57 Invalid, 1591 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [44 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1432.63ms Time] [2021-11-12 23:05:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-11-12 23:05:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 1350. [2021-11-12 23:05:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.375092661230541) internal successors, (4553), 1349 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4553 transitions. [2021-11-12 23:05:25,542 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4553 transitions. Word has length 33 [2021-11-12 23:05:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:25,542 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4553 transitions. [2021-11-12 23:05:25,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4553 transitions. [2021-11-12 23:05:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:25,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:25,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:25,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-11-12 23:05:25,545 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1784368487, now seen corresponding path program 221 times [2021-11-12 23:05:25,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:25,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889664667] [2021-11-12 23:05:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:25,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:26,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:26,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:26,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889664667] [2021-11-12 23:05:26,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889664667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:26,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:26,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:26,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297084362] [2021-11-12 23:05:26,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:26,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:26,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:26,393 INFO L87 Difference]: Start difference. First operand 1350 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:28,528 INFO L93 Difference]: Finished difference Result 2815 states and 8415 transitions. [2021-11-12 23:05:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:05:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:28,534 INFO L225 Difference]: With dead ends: 2815 [2021-11-12 23:05:28,534 INFO L226 Difference]: Without dead ends: 2804 [2021-11-12 23:05:28,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:05:28,534 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 298 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1146.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1323.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:28,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 43 Invalid, 1439 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [44 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1323.93ms Time] [2021-11-12 23:05:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-12 23:05:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1352. [2021-11-12 23:05:28,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:05:28,571 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:05:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:28,571 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:05:28,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:28,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:05:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:28,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:28,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:28,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-11-12 23:05:28,574 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:28,574 INFO L85 PathProgramCache]: Analyzing trace with hash -711283107, now seen corresponding path program 222 times [2021-11-12 23:05:28,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:28,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543783015] [2021-11-12 23:05:28,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:28,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:29,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:29,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543783015] [2021-11-12 23:05:29,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543783015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:29,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:29,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:29,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786109703] [2021-11-12 23:05:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:29,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:29,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:29,521 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:31,363 INFO L93 Difference]: Finished difference Result 2817 states and 8417 transitions. [2021-11-12 23:05:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:05:31,364 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:31,368 INFO L225 Difference]: With dead ends: 2817 [2021-11-12 23:05:31,368 INFO L226 Difference]: Without dead ends: 2802 [2021-11-12 23:05:31,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:05:31,369 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 252 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1007.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1164.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:31,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 43 Invalid, 1467 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [45 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1164.39ms Time] [2021-11-12 23:05:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-11-12 23:05:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1350. [2021-11-12 23:05:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:05:31,396 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:05:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:31,396 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:05:31,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:05:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:31,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:31,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:31,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-11-12 23:05:31,398 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1836884007, now seen corresponding path program 223 times [2021-11-12 23:05:31,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:31,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956182309] [2021-11-12 23:05:31,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:31,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:32,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:32,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956182309] [2021-11-12 23:05:32,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956182309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:32,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:32,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:32,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137689754] [2021-11-12 23:05:32,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:32,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:32,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:32,230 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:34,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:34,012 INFO L93 Difference]: Finished difference Result 2849 states and 8484 transitions. [2021-11-12 23:05:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 23:05:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:34,017 INFO L225 Difference]: With dead ends: 2849 [2021-11-12 23:05:34,017 INFO L226 Difference]: Without dead ends: 2832 [2021-11-12 23:05:34,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=479, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:05:34,018 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 294 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 882.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1020.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:34,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 52 Invalid, 1447 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [45 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 1020.68ms Time] [2021-11-12 23:05:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-12 23:05:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1354. [2021-11-12 23:05:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.368810051736881) internal successors, (4558), 1353 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4558 transitions. [2021-11-12 23:05:34,060 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4558 transitions. Word has length 33 [2021-11-12 23:05:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:34,060 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4558 transitions. [2021-11-12 23:05:34,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4558 transitions. [2021-11-12 23:05:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:34,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:34,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:34,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-11-12 23:05:34,062 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1299028429, now seen corresponding path program 224 times [2021-11-12 23:05:34,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:34,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911308107] [2021-11-12 23:05:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:34,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:34,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:34,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911308107] [2021-11-12 23:05:34,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911308107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:34,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:34,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:34,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322789839] [2021-11-12 23:05:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:34,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:34,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:34,753 INFO L87 Difference]: Start difference. First operand 1354 states and 4558 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:36,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:36,552 INFO L93 Difference]: Finished difference Result 2837 states and 8457 transitions. [2021-11-12 23:05:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:05:36,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:36,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:36,556 INFO L225 Difference]: With dead ends: 2837 [2021-11-12 23:05:36,557 INFO L226 Difference]: Without dead ends: 2818 [2021-11-12 23:05:36,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:05:36,557 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 224 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 955.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.22ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1101.98ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:36,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 50 Invalid, 1585 Unknown, 0 Unchecked, 4.22ms Time], IncrementalHoareTripleChecker [44 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 1101.98ms Time] [2021-11-12 23:05:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-11-12 23:05:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1348. [2021-11-12 23:05:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.374907201187825) internal successors, (4546), 1347 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4546 transitions. [2021-11-12 23:05:36,583 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4546 transitions. Word has length 33 [2021-11-12 23:05:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:36,583 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4546 transitions. [2021-11-12 23:05:36,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4546 transitions. [2021-11-12 23:05:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:36,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:36,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:36,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-11-12 23:05:36,585 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:36,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1399786033, now seen corresponding path program 225 times [2021-11-12 23:05:36,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:36,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374746296] [2021-11-12 23:05:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:36,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:37,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:37,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374746296] [2021-11-12 23:05:37,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374746296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:37,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:37,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:37,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167767023] [2021-11-12 23:05:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:37,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:37,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:37,336 INFO L87 Difference]: Start difference. First operand 1348 states and 4546 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:38,862 INFO L93 Difference]: Finished difference Result 2845 states and 8463 transitions. [2021-11-12 23:05:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:38,862 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:38,867 INFO L225 Difference]: With dead ends: 2845 [2021-11-12 23:05:38,867 INFO L226 Difference]: Without dead ends: 2834 [2021-11-12 23:05:38,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:38,867 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 264 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 853.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.79ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 988.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:38,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 51 Invalid, 1421 Unknown, 0 Unchecked, 3.79ms Time], IncrementalHoareTripleChecker [43 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 988.04ms Time] [2021-11-12 23:05:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-11-12 23:05:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1352. [2021-11-12 23:05:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3723168023686156) internal successors, (4556), 1351 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4556 transitions. [2021-11-12 23:05:38,894 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4556 transitions. Word has length 33 [2021-11-12 23:05:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:38,895 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4556 transitions. [2021-11-12 23:05:38,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4556 transitions. [2021-11-12 23:05:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:38,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:38,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:38,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-11-12 23:05:38,897 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:38,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1935015835, now seen corresponding path program 226 times [2021-11-12 23:05:38,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:38,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187333313] [2021-11-12 23:05:38,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:38,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:39,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:39,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187333313] [2021-11-12 23:05:39,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187333313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:39,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:39,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:39,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756014044] [2021-11-12 23:05:39,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:39,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:39,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:39,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:39,673 INFO L87 Difference]: Start difference. First operand 1352 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:41,213 INFO L93 Difference]: Finished difference Result 2851 states and 8473 transitions. [2021-11-12 23:05:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:41,214 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:41,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:41,218 INFO L225 Difference]: With dead ends: 2851 [2021-11-12 23:05:41,218 INFO L226 Difference]: Without dead ends: 2832 [2021-11-12 23:05:41,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:41,219 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 292 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 854.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 991.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:41,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 52 Invalid, 1463 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [43 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 991.51ms Time] [2021-11-12 23:05:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-12 23:05:41,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1350. [2021-11-12 23:05:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.373610081541883) internal successors, (4551), 1349 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4551 transitions. [2021-11-12 23:05:41,246 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4551 transitions. Word has length 33 [2021-11-12 23:05:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:41,246 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4551 transitions. [2021-11-12 23:05:41,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4551 transitions. [2021-11-12 23:05:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:41,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:41,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:41,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-11-12 23:05:41,248 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash -544199975, now seen corresponding path program 227 times [2021-11-12 23:05:41,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:41,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681086245] [2021-11-12 23:05:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:41,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:41,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:41,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681086245] [2021-11-12 23:05:41,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681086245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:41,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:41,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:41,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394599147] [2021-11-12 23:05:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:41,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:41,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:41,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:41,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:41,982 INFO L87 Difference]: Start difference. First operand 1350 states and 4551 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:43,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:43,493 INFO L93 Difference]: Finished difference Result 2841 states and 8454 transitions. [2021-11-12 23:05:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:43,494 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:43,498 INFO L225 Difference]: With dead ends: 2841 [2021-11-12 23:05:43,498 INFO L226 Difference]: Without dead ends: 2830 [2021-11-12 23:05:43,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:43,499 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 314 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 840.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 972.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:43,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 44 Invalid, 1364 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [43 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 972.76ms Time] [2021-11-12 23:05:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-11-12 23:05:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 1352. [2021-11-12 23:05:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3708364174685417) internal successors, (4554), 1351 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4554 transitions. [2021-11-12 23:05:43,526 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4554 transitions. Word has length 33 [2021-11-12 23:05:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:43,526 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4554 transitions. [2021-11-12 23:05:43,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4554 transitions. [2021-11-12 23:05:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:43,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:43,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:43,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-11-12 23:05:43,529 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2145077915, now seen corresponding path program 228 times [2021-11-12 23:05:43,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:43,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119027165] [2021-11-12 23:05:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:43,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:44,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:44,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119027165] [2021-11-12 23:05:44,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119027165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:44,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:44,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:44,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772531957] [2021-11-12 23:05:44,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:44,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:44,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:44,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:44,232 INFO L87 Difference]: Start difference. First operand 1352 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:45,792 INFO L93 Difference]: Finished difference Result 2835 states and 8451 transitions. [2021-11-12 23:05:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:45,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:45,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:45,812 INFO L225 Difference]: With dead ends: 2835 [2021-11-12 23:05:45,812 INFO L226 Difference]: Without dead ends: 2818 [2021-11-12 23:05:45,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:45,813 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 223 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 874.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1013.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:45,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 48 Invalid, 1540 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [42 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1013.63ms Time] [2021-11-12 23:05:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-11-12 23:05:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1350. [2021-11-12 23:05:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 23:05:45,839 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 23:05:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:45,839 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 23:05:45,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 23:05:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:45,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:45,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:45,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-11-12 23:05:45,842 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:45,842 INFO L85 PathProgramCache]: Analyzing trace with hash -596715495, now seen corresponding path program 229 times [2021-11-12 23:05:45,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:45,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646900329] [2021-11-12 23:05:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:45,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:46,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:46,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646900329] [2021-11-12 23:05:46,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646900329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:46,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:46,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:46,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758867695] [2021-11-12 23:05:46,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:46,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:46,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:46,546 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:48,015 INFO L93 Difference]: Finished difference Result 2851 states and 8476 transitions. [2021-11-12 23:05:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:48,015 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:48,019 INFO L225 Difference]: With dead ends: 2851 [2021-11-12 23:05:48,019 INFO L226 Difference]: Without dead ends: 2834 [2021-11-12 23:05:48,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:48,019 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 302 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 787.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 931.72ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:48,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 41 Invalid, 1408 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [43 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 931.72ms Time] [2021-11-12 23:05:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2021-11-12 23:05:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1356. [2021-11-12 23:05:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3653136531365315) internal successors, (4560), 1355 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4560 transitions. [2021-11-12 23:05:48,045 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4560 transitions. Word has length 33 [2021-11-12 23:05:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:48,045 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4560 transitions. [2021-11-12 23:05:48,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4560 transitions. [2021-11-12 23:05:48,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:48,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:48,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:48,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-11-12 23:05:48,047 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1557332593, now seen corresponding path program 230 times [2021-11-12 23:05:48,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:48,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590032709] [2021-11-12 23:05:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:48,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:48,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:48,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590032709] [2021-11-12 23:05:48,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590032709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:48,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:48,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:48,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523337053] [2021-11-12 23:05:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:48,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:48,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:48,786 INFO L87 Difference]: Start difference. First operand 1356 states and 4560 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:50,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:50,323 INFO L93 Difference]: Finished difference Result 2839 states and 8457 transitions. [2021-11-12 23:05:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:50,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:50,328 INFO L225 Difference]: With dead ends: 2839 [2021-11-12 23:05:50,328 INFO L226 Difference]: Without dead ends: 2816 [2021-11-12 23:05:50,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:50,328 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 836.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 969.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:50,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 40 Invalid, 1455 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [43 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 969.57ms Time] [2021-11-12 23:05:50,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-12 23:05:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1348. [2021-11-12 23:05:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3734224201930214) internal successors, (4544), 1347 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4544 transitions. [2021-11-12 23:05:50,355 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4544 transitions. Word has length 33 [2021-11-12 23:05:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:50,355 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4544 transitions. [2021-11-12 23:05:50,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4544 transitions. [2021-11-12 23:05:50,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:50,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:50,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:50,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-11-12 23:05:50,358 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:50,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:50,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1918392591, now seen corresponding path program 231 times [2021-11-12 23:05:50,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:50,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515118919] [2021-11-12 23:05:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:50,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:51,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:51,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515118919] [2021-11-12 23:05:51,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515118919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:51,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:51,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:51,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470646735] [2021-11-12 23:05:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:51,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:51,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:51,107 INFO L87 Difference]: Start difference. First operand 1348 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:52,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:52,777 INFO L93 Difference]: Finished difference Result 2829 states and 8424 transitions. [2021-11-12 23:05:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:52,777 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:52,782 INFO L225 Difference]: With dead ends: 2829 [2021-11-12 23:05:52,782 INFO L226 Difference]: Without dead ends: 2818 [2021-11-12 23:05:52,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:52,782 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 280 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 934.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1077.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:52,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 41 Invalid, 1511 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [43 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1077.23ms Time] [2021-11-12 23:05:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-11-12 23:05:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1352. [2021-11-12 23:05:52,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3708364174685417) internal successors, (4554), 1351 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4554 transitions. [2021-11-12 23:05:52,809 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4554 transitions. Word has length 33 [2021-11-12 23:05:52,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:52,809 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4554 transitions. [2021-11-12 23:05:52,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4554 transitions. [2021-11-12 23:05:52,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:52,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:52,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:52,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-11-12 23:05:52,811 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:52,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash -845307211, now seen corresponding path program 232 times [2021-11-12 23:05:52,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:52,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605956407] [2021-11-12 23:05:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:52,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:53,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:53,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605956407] [2021-11-12 23:05:53,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605956407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:53,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:53,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:53,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384953922] [2021-11-12 23:05:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:53,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:53,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:53,502 INFO L87 Difference]: Start difference. First operand 1352 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:55,097 INFO L93 Difference]: Finished difference Result 2831 states and 8426 transitions. [2021-11-12 23:05:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:55,102 INFO L225 Difference]: With dead ends: 2831 [2021-11-12 23:05:55,102 INFO L226 Difference]: Without dead ends: 2816 [2021-11-12 23:05:55,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:55,102 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 306 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 899.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1040.02ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:55,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 37 Invalid, 1492 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [44 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1040.02ms Time] [2021-11-12 23:05:55,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-12 23:05:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1350. [2021-11-12 23:05:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3721275018532246) internal successors, (4549), 1349 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4549 transitions. [2021-11-12 23:05:55,129 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4549 transitions. Word has length 33 [2021-11-12 23:05:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:55,130 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4549 transitions. [2021-11-12 23:05:55,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4549 transitions. [2021-11-12 23:05:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:55,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:55,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:55,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-11-12 23:05:55,132 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash 938934963, now seen corresponding path program 233 times [2021-11-12 23:05:55,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:55,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756160336] [2021-11-12 23:05:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:55,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:55,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:55,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756160336] [2021-11-12 23:05:55,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756160336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:55,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:55,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:55,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299133760] [2021-11-12 23:05:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:55,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:55,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:55,774 INFO L87 Difference]: Start difference. First operand 1350 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:57,432 INFO L93 Difference]: Finished difference Result 2827 states and 8418 transitions. [2021-11-12 23:05:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:57,433 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:57,437 INFO L225 Difference]: With dead ends: 2827 [2021-11-12 23:05:57,437 INFO L226 Difference]: Without dead ends: 2816 [2021-11-12 23:05:57,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:57,438 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 278 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 904.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1048.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:57,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 46 Invalid, 1506 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [43 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1048.45ms Time] [2021-11-12 23:05:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-12 23:05:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1352. [2021-11-12 23:05:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3693560325684677) internal successors, (4552), 1351 states have internal predecessors, (4552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4552 transitions. [2021-11-12 23:05:57,487 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4552 transitions. Word has length 33 [2021-11-12 23:05:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:57,488 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4552 transitions. [2021-11-12 23:05:57,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4552 transitions. [2021-11-12 23:05:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:57,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:57,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:57,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-11-12 23:05:57,490 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash -666754443, now seen corresponding path program 234 times [2021-11-12 23:05:57,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:57,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430606894] [2021-11-12 23:05:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:57,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:05:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:05:58,220 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:05:58,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430606894] [2021-11-12 23:05:58,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430606894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:05:58,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:05:58,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:05:58,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475084009] [2021-11-12 23:05:58,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:05:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:05:58,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:05:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:05:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:05:58,221 INFO L87 Difference]: Start difference. First operand 1352 states and 4552 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:05:59,917 INFO L93 Difference]: Finished difference Result 2821 states and 8415 transitions. [2021-11-12 23:05:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:05:59,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:05:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:05:59,921 INFO L225 Difference]: With dead ends: 2821 [2021-11-12 23:05:59,921 INFO L226 Difference]: Without dead ends: 2804 [2021-11-12 23:05:59,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:05:59,922 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 251 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 926.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1070.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:05:59,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 44 Invalid, 1509 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [43 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1070.30ms Time] [2021-11-12 23:05:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-12 23:05:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1350. [2021-11-12 23:05:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3706449221645665) internal successors, (4547), 1349 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4547 transitions. [2021-11-12 23:05:59,948 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4547 transitions. Word has length 33 [2021-11-12 23:05:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:05:59,948 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4547 transitions. [2021-11-12 23:05:59,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:05:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4547 transitions. [2021-11-12 23:05:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:05:59,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:05:59,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:05:59,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-11-12 23:05:59,951 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:05:59,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:05:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash 917928755, now seen corresponding path program 235 times [2021-11-12 23:05:59,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:05:59,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897334354] [2021-11-12 23:05:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:05:59,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:05:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:00,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:00,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897334354] [2021-11-12 23:06:00,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897334354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:00,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:00,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:00,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537195497] [2021-11-12 23:06:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:00,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:00,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:00,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:00,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:00,824 INFO L87 Difference]: Start difference. First operand 1350 states and 4547 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:02,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:02,405 INFO L93 Difference]: Finished difference Result 2821 states and 8417 transitions. [2021-11-12 23:06:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:02,405 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:02,410 INFO L225 Difference]: With dead ends: 2821 [2021-11-12 23:06:02,410 INFO L226 Difference]: Without dead ends: 2808 [2021-11-12 23:06:02,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:02,410 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 255 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 866.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1002.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:02,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 41 Invalid, 1416 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [44 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1002.07ms Time] [2021-11-12 23:06:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2021-11-12 23:06:02,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 1354. [2021-11-12 23:06:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3658536585365852) internal successors, (4554), 1353 states have internal predecessors, (4554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4554 transitions. [2021-11-12 23:06:02,440 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4554 transitions. Word has length 33 [2021-11-12 23:06:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:02,441 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4554 transitions. [2021-11-12 23:06:02,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4554 transitions. [2021-11-12 23:06:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:02,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:02,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:02,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-11-12 23:06:02,443 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:02,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1760846031, now seen corresponding path program 236 times [2021-11-12 23:06:02,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:02,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145443636] [2021-11-12 23:06:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:02,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:03,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:03,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145443636] [2021-11-12 23:06:03,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145443636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:03,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:03,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:03,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402395201] [2021-11-12 23:06:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:03,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:03,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:03,234 INFO L87 Difference]: Start difference. First operand 1354 states and 4554 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:04,823 INFO L93 Difference]: Finished difference Result 2807 states and 8397 transitions. [2021-11-12 23:06:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:04,824 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:04,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:04,828 INFO L225 Difference]: With dead ends: 2807 [2021-11-12 23:06:04,828 INFO L226 Difference]: Without dead ends: 2786 [2021-11-12 23:06:04,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:04,829 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 237 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 835.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.66ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 969.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:04,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 42 Invalid, 1412 Unknown, 0 Unchecked, 4.66ms Time], IncrementalHoareTripleChecker [43 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 969.82ms Time] [2021-11-12 23:06:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-11-12 23:06:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1348. [2021-11-12 23:06:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 3.3719376391982183) internal successors, (4542), 1347 states have internal predecessors, (4542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 4542 transitions. [2021-11-12 23:06:04,859 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 4542 transitions. Word has length 33 [2021-11-12 23:06:04,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:04,859 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 4542 transitions. [2021-11-12 23:06:04,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 4542 transitions. [2021-11-12 23:06:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:04,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:04,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:04,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-11-12 23:06:04,862 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:04,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1283823387, now seen corresponding path program 237 times [2021-11-12 23:06:04,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:04,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167360835] [2021-11-12 23:06:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:04,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:05,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:05,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167360835] [2021-11-12 23:06:05,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167360835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:05,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:05,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:05,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380027583] [2021-11-12 23:06:05,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:05,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:05,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:05,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:05,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:05,631 INFO L87 Difference]: Start difference. First operand 1348 states and 4542 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:07,239 INFO L93 Difference]: Finished difference Result 2835 states and 8456 transitions. [2021-11-12 23:06:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:07,239 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:07,243 INFO L225 Difference]: With dead ends: 2835 [2021-11-12 23:06:07,244 INFO L226 Difference]: Without dead ends: 2818 [2021-11-12 23:06:07,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:07,244 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 296 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 847.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.81ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 981.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:07,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 47 Invalid, 1350 Unknown, 0 Unchecked, 4.81ms Time], IncrementalHoareTripleChecker [44 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 981.24ms Time] [2021-11-12 23:06:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2021-11-12 23:06:07,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1356. [2021-11-12 23:06:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3682656826568267) internal successors, (4564), 1355 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4564 transitions. [2021-11-12 23:06:07,272 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4564 transitions. Word has length 33 [2021-11-12 23:06:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:07,272 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4564 transitions. [2021-11-12 23:06:07,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:07,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4564 transitions. [2021-11-12 23:06:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:07,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:07,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:07,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-11-12 23:06:07,274 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1821678965, now seen corresponding path program 238 times [2021-11-12 23:06:07,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:07,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945404553] [2021-11-12 23:06:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:07,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:08,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:08,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945404553] [2021-11-12 23:06:08,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945404553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:08,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:08,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:08,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729031096] [2021-11-12 23:06:08,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:08,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:08,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:08,126 INFO L87 Difference]: Start difference. First operand 1356 states and 4564 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:09,837 INFO L93 Difference]: Finished difference Result 2831 states and 8444 transitions. [2021-11-12 23:06:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:09,842 INFO L225 Difference]: With dead ends: 2831 [2021-11-12 23:06:09,843 INFO L226 Difference]: Without dead ends: 2814 [2021-11-12 23:06:09,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:09,843 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 263 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 915.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.76ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1055.35ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:09,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 44 Invalid, 1403 Unknown, 0 Unchecked, 4.76ms Time], IncrementalHoareTripleChecker [45 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1055.35ms Time] [2021-11-12 23:06:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2021-11-12 23:06:09,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 1352. [2021-11-12 23:06:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.370096225018505) internal successors, (4553), 1351 states have internal predecessors, (4553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4553 transitions. [2021-11-12 23:06:09,873 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4553 transitions. Word has length 33 [2021-11-12 23:06:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:09,873 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4553 transitions. [2021-11-12 23:06:09,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4553 transitions. [2021-11-12 23:06:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:09,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:09,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:09,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-11-12 23:06:09,876 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash -153816355, now seen corresponding path program 239 times [2021-11-12 23:06:09,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:09,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787537102] [2021-11-12 23:06:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:09,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:10,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:10,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787537102] [2021-11-12 23:06:10,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787537102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:10,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:10,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:10,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582215487] [2021-11-12 23:06:10,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:10,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:10,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:10,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:10,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:10,674 INFO L87 Difference]: Start difference. First operand 1352 states and 4553 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:12,265 INFO L93 Difference]: Finished difference Result 2823 states and 8426 transitions. [2021-11-12 23:06:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:12,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:12,270 INFO L225 Difference]: With dead ends: 2823 [2021-11-12 23:06:12,270 INFO L226 Difference]: Without dead ends: 2806 [2021-11-12 23:06:12,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:12,270 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 251 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 858.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 993.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:12,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 41 Invalid, 1457 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [43 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 993.66ms Time] [2021-11-12 23:06:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2021-11-12 23:06:12,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 1358. [2021-11-12 23:06:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.363301400147384) internal successors, (4564), 1357 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4564 transitions. [2021-11-12 23:06:12,300 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4564 transitions. Word has length 33 [2021-11-12 23:06:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:12,300 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4564 transitions. [2021-11-12 23:06:12,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4564 transitions. [2021-11-12 23:06:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:12,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:12,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:12,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-11-12 23:06:12,302 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:12,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:12,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2000231733, now seen corresponding path program 240 times [2021-11-12 23:06:12,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:12,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981684235] [2021-11-12 23:06:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:12,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:12,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:12,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981684235] [2021-11-12 23:06:12,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981684235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:12,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:12,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:12,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178146322] [2021-11-12 23:06:12,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:12,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:12,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:12,991 INFO L87 Difference]: Start difference. First operand 1358 states and 4564 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:14,481 INFO L93 Difference]: Finished difference Result 2811 states and 8407 transitions. [2021-11-12 23:06:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:14,481 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:14,485 INFO L225 Difference]: With dead ends: 2811 [2021-11-12 23:06:14,486 INFO L226 Difference]: Without dead ends: 2790 [2021-11-12 23:06:14,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=379, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:14,486 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 246 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 801.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 928.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:14,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 34 Invalid, 1314 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [44 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 928.21ms Time] [2021-11-12 23:06:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2021-11-12 23:06:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1352. [2021-11-12 23:06:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.3671354552183566) internal successors, (4549), 1351 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4549 transitions. [2021-11-12 23:06:14,515 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4549 transitions. Word has length 33 [2021-11-12 23:06:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:14,515 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4549 transitions. [2021-11-12 23:06:14,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4549 transitions. [2021-11-12 23:06:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:14,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:14,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:14,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-11-12 23:06:14,518 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash -122307043, now seen corresponding path program 241 times [2021-11-12 23:06:14,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:14,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029140546] [2021-11-12 23:06:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:14,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:15,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:15,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029140546] [2021-11-12 23:06:15,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029140546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:15,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:15,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:15,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411309259] [2021-11-12 23:06:15,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:15,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:15,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:15,253 INFO L87 Difference]: Start difference. First operand 1352 states and 4549 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:16,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:16,808 INFO L93 Difference]: Finished difference Result 2799 states and 8381 transitions. [2021-11-12 23:06:16,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:16,808 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:16,812 INFO L225 Difference]: With dead ends: 2799 [2021-11-12 23:06:16,813 INFO L226 Difference]: Without dead ends: 2786 [2021-11-12 23:06:16,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:16,813 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 245 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 826.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 957.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:16,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 40 Invalid, 1405 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [42 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 957.94ms Time] [2021-11-12 23:06:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-11-12 23:06:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1356. [2021-11-12 23:06:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3623616236162364) internal successors, (4556), 1355 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4556 transitions. [2021-11-12 23:06:16,840 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4556 transitions. Word has length 33 [2021-11-12 23:06:16,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:16,840 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4556 transitions. [2021-11-12 23:06:16,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4556 transitions. [2021-11-12 23:06:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:16,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:16,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:16,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-11-12 23:06:16,842 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:16,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1493885467, now seen corresponding path program 242 times [2021-11-12 23:06:16,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:16,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889321033] [2021-11-12 23:06:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:16,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:17,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:17,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889321033] [2021-11-12 23:06:17,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889321033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:17,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:17,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:17,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299114740] [2021-11-12 23:06:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:17,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:17,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:17,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:17,580 INFO L87 Difference]: Start difference. First operand 1356 states and 4556 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:19,177 INFO L93 Difference]: Finished difference Result 2785 states and 8361 transitions. [2021-11-12 23:06:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:06:19,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:19,181 INFO L225 Difference]: With dead ends: 2785 [2021-11-12 23:06:19,182 INFO L226 Difference]: Without dead ends: 2760 [2021-11-12 23:06:19,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:06:19,182 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 234 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 839.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 973.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:19,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 40 Invalid, 1466 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [41 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 973.86ms Time] [2021-11-12 23:06:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-11-12 23:06:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1346. [2021-11-12 23:06:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.3732342007434943) internal successors, (4537), 1345 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4537 transitions. [2021-11-12 23:06:19,208 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4537 transitions. Word has length 33 [2021-11-12 23:06:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:19,208 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4537 transitions. [2021-11-12 23:06:19,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4537 transitions. [2021-11-12 23:06:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:19,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:19,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:19,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-11-12 23:06:19,210 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2061543453, now seen corresponding path program 243 times [2021-11-12 23:06:19,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:19,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727432630] [2021-11-12 23:06:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:19,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:20,064 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:20,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727432630] [2021-11-12 23:06:20,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727432630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:20,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:20,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:20,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773391321] [2021-11-12 23:06:20,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:20,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:20,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:20,065 INFO L87 Difference]: Start difference. First operand 1346 states and 4537 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:21,746 INFO L93 Difference]: Finished difference Result 2887 states and 8561 transitions. [2021-11-12 23:06:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:06:21,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:21,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:21,751 INFO L225 Difference]: With dead ends: 2887 [2021-11-12 23:06:21,751 INFO L226 Difference]: Without dead ends: 2866 [2021-11-12 23:06:21,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:06:21,751 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 245 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 918.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1058.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:21,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 43 Invalid, 1411 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [42 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1058.43ms Time] [2021-11-12 23:06:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-11-12 23:06:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1356. [2021-11-12 23:06:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.3675276752767527) internal successors, (4563), 1355 states have internal predecessors, (4563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 4563 transitions. [2021-11-12 23:06:21,779 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 4563 transitions. Word has length 33 [2021-11-12 23:06:21,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:21,779 INFO L470 AbstractCegarLoop]: Abstraction has 1356 states and 4563 transitions. [2021-11-12 23:06:21,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:21,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 4563 transitions. [2021-11-12 23:06:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:21,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:21,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:21,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-11-12 23:06:21,781 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash 304218593, now seen corresponding path program 244 times [2021-11-12 23:06:21,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:21,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254451523] [2021-11-12 23:06:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:21,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:22,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:22,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254451523] [2021-11-12 23:06:22,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254451523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:22,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:22,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:22,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746699677] [2021-11-12 23:06:22,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:22,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:22,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:22,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:22,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:22,464 INFO L87 Difference]: Start difference. First operand 1356 states and 4563 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:24,207 INFO L93 Difference]: Finished difference Result 2897 states and 8580 transitions. [2021-11-12 23:06:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 23:06:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:24,211 INFO L225 Difference]: With dead ends: 2897 [2021-11-12 23:06:24,212 INFO L226 Difference]: Without dead ends: 2880 [2021-11-12 23:06:24,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:06:24,212 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 234 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 918.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1062.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:24,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 54 Invalid, 1532 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [45 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1062.70ms Time] [2021-11-12 23:06:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2021-11-12 23:06:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1362. [2021-11-12 23:06:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.360764144011756) internal successors, (4574), 1361 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4574 transitions. [2021-11-12 23:06:24,243 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4574 transitions. Word has length 33 [2021-11-12 23:06:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:24,243 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 4574 transitions. [2021-11-12 23:06:24,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4574 transitions. [2021-11-12 23:06:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:24,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:24,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:24,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-11-12 23:06:24,245 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:24,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:24,245 INFO L85 PathProgramCache]: Analyzing trace with hash 858331193, now seen corresponding path program 245 times [2021-11-12 23:06:24,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:24,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647812965] [2021-11-12 23:06:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:24,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:24,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:24,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647812965] [2021-11-12 23:06:24,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647812965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:24,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:24,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:24,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715621512] [2021-11-12 23:06:24,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:24,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:24,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:24,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:24,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:24,976 INFO L87 Difference]: Start difference. First operand 1362 states and 4574 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:26,556 INFO L93 Difference]: Finished difference Result 2887 states and 8555 transitions. [2021-11-12 23:06:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:06:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:26,560 INFO L225 Difference]: With dead ends: 2887 [2021-11-12 23:06:26,561 INFO L226 Difference]: Without dead ends: 2860 [2021-11-12 23:06:26,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:06:26,561 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 270 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 823.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 955.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:26,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 47 Invalid, 1351 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [45 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 955.13ms Time] [2021-11-12 23:06:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-11-12 23:06:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1350. [2021-11-12 23:06:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3713862120088955) internal successors, (4548), 1349 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4548 transitions. [2021-11-12 23:06:26,589 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4548 transitions. Word has length 33 [2021-11-12 23:06:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:26,589 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4548 transitions. [2021-11-12 23:06:26,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:26,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4548 transitions. [2021-11-12 23:06:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:26,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:26,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:26,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-11-12 23:06:26,591 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash -578408515, now seen corresponding path program 246 times [2021-11-12 23:06:26,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:26,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692893915] [2021-11-12 23:06:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:26,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:27,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:27,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692893915] [2021-11-12 23:06:27,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692893915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:27,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:27,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:27,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723360277] [2021-11-12 23:06:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:27,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:27,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:27,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:27,447 INFO L87 Difference]: Start difference. First operand 1350 states and 4548 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:29,124 INFO L93 Difference]: Finished difference Result 2853 states and 8485 transitions. [2021-11-12 23:06:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:06:29,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:29,129 INFO L225 Difference]: With dead ends: 2853 [2021-11-12 23:06:29,129 INFO L226 Difference]: Without dead ends: 2832 [2021-11-12 23:06:29,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:06:29,130 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 257 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 973.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.39ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1119.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:29,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 46 Invalid, 1518 Unknown, 0 Unchecked, 4.39ms Time], IncrementalHoareTripleChecker [40 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1119.87ms Time] [2021-11-12 23:06:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-11-12 23:06:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1354. [2021-11-12 23:06:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.3665927568366594) internal successors, (4555), 1353 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4555 transitions. [2021-11-12 23:06:29,157 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4555 transitions. Word has length 33 [2021-11-12 23:06:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:29,158 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4555 transitions. [2021-11-12 23:06:29,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4555 transitions. [2021-11-12 23:06:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:29,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:29,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:29,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-11-12 23:06:29,160 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:29,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1520318127, now seen corresponding path program 247 times [2021-11-12 23:06:29,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:29,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145957684] [2021-11-12 23:06:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:29,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:29,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:29,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145957684] [2021-11-12 23:06:29,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145957684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:29,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:29,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:29,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250859580] [2021-11-12 23:06:29,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:29,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:29,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:29,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:29,774 INFO L87 Difference]: Start difference. First operand 1354 states and 4555 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:31,394 INFO L93 Difference]: Finished difference Result 2849 states and 8477 transitions. [2021-11-12 23:06:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:06:31,394 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:31,399 INFO L225 Difference]: With dead ends: 2849 [2021-11-12 23:06:31,399 INFO L226 Difference]: Without dead ends: 2836 [2021-11-12 23:06:31,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:06:31,399 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 248 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 889.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.81ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1032.83ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:31,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 48 Invalid, 1546 Unknown, 0 Unchecked, 4.81ms Time], IncrementalHoareTripleChecker [42 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1032.83ms Time] [2021-11-12 23:06:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2021-11-12 23:06:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 1358. [2021-11-12 23:06:31,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.361827560795873) internal successors, (4562), 1357 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4562 transitions. [2021-11-12 23:06:31,428 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4562 transitions. Word has length 33 [2021-11-12 23:06:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:31,428 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4562 transitions. [2021-11-12 23:06:31,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4562 transitions. [2021-11-12 23:06:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:31,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:31,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:31,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-11-12 23:06:31,430 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:31,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:31,431 INFO L85 PathProgramCache]: Analyzing trace with hash 134993103, now seen corresponding path program 248 times [2021-11-12 23:06:31,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:31,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993186721] [2021-11-12 23:06:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:31,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:32,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:32,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993186721] [2021-11-12 23:06:32,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993186721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:32,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:32,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:32,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586189245] [2021-11-12 23:06:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:32,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:32,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:32,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:32,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:32,088 INFO L87 Difference]: Start difference. First operand 1358 states and 4562 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:33,647 INFO L93 Difference]: Finished difference Result 2835 states and 8457 transitions. [2021-11-12 23:06:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:06:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:33,651 INFO L225 Difference]: With dead ends: 2835 [2021-11-12 23:06:33,652 INFO L226 Difference]: Without dead ends: 2812 [2021-11-12 23:06:33,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:06:33,652 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 845.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 975.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:33,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 49 Invalid, 1422 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [42 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 975.95ms Time] [2021-11-12 23:06:33,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-11-12 23:06:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1350. [2021-11-12 23:06:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 3.3684210526315788) internal successors, (4544), 1349 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 4544 transitions. [2021-11-12 23:06:33,678 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 4544 transitions. Word has length 33 [2021-11-12 23:06:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:33,678 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 4544 transitions. [2021-11-12 23:06:33,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 4544 transitions. [2021-11-12 23:06:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:33,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:33,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:33,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-11-12 23:06:33,680 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash -31064733, now seen corresponding path program 249 times [2021-11-12 23:06:33,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:33,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415378474] [2021-11-12 23:06:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:33,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:34,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:34,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415378474] [2021-11-12 23:06:34,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415378474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:34,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:34,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:34,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566153707] [2021-11-12 23:06:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:34,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:34,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:34,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:34,338 INFO L87 Difference]: Start difference. First operand 1350 states and 4544 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:36,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:36,222 INFO L93 Difference]: Finished difference Result 2881 states and 8551 transitions. [2021-11-12 23:06:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 23:06:36,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-12 23:06:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:36,227 INFO L225 Difference]: With dead ends: 2881 [2021-11-12 23:06:36,227 INFO L226 Difference]: Without dead ends: 2864 [2021-11-12 23:06:36,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:06:36,227 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 295 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 944.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1088.28ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:36,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 54 Invalid, 1450 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [44 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1088.28ms Time] [2021-11-12 23:06:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2021-11-12 23:06:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1358. [2021-11-12 23:06:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 3.364775239498895) internal successors, (4566), 1357 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:36,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 4566 transitions. [2021-11-12 23:06:36,252 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 4566 transitions. Word has length 33 [2021-11-12 23:06:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:36,252 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 4566 transitions. [2021-11-12 23:06:36,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:06:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 4566 transitions. [2021-11-12 23:06:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-12 23:06:36,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:36,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:36,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-11-12 23:06:36,254 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-12 23:06:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1760112067, now seen corresponding path program 250 times [2021-11-12 23:06:36,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:06:36,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906734984] [2021-11-12 23:06:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:36,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:06:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:06:37,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:06:37,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906734984] [2021-11-12 23:06:37,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906734984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:37,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:37,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-12 23:06:37,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383308415] [2021-11-12 23:06:37,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:37,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:06:37,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:06:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:06:37,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:06:37,017 INFO L87 Difference]: Start difference. First operand 1358 states and 4566 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)