./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG --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 db3674d4e110d61289adcfc52216f8004ef1ec49416f84e6bf350103cb2e8879 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:41:30,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:41:30,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:41:30,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:41:30,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:41:30,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:41:30,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:41:30,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:41:30,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:41:30,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:41:30,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:41:30,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:41:30,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:41:30,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:41:30,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:41:30,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:41:30,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:41:30,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:41:30,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:41:30,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:41:30,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:41:30,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:41:30,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:41:30,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:41:30,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:41:30,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:41:30,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:41:30,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:41:30,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:41:30,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:41:30,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:41:30,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:41:30,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:41:30,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:41:30,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:41:30,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:41:30,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:41:30,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:41:30,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:41:30,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:41:30,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:41:30,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:41:30,992 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:41:30,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:41:30,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:41:30,996 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:41:30,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:41:30,997 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:41:30,997 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:41:30,997 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:41:31,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:41:31,004 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:41:31,005 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:41:31,005 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:41:31,006 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:41:31,006 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:41:31,006 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:41:31,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:41:31,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:41:31,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:41:31,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:41:31,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:41:31,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:41:31,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:41:31,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:41:31,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:41:31,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:41:31,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:41:31,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:41:31,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:41:31,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:41:31,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:41:31,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:41:31,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:41:31,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:41:31,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:41:31,012 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:41:31,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:41:31,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:41:31,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:41:31,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:41:31,013 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_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db3674d4e110d61289adcfc52216f8004ef1ec49416f84e6bf350103cb2e8879 [2021-10-29 05:41:31,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:41:31,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:41:31,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:41:31,333 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:41:31,334 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:41:31,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2021-10-29 05:41:31,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/data/1321af4fd/604c297e3ff140e3b8ac4911cd8f040a/FLAGb9f194101 [2021-10-29 05:41:31,998 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:41:32,000 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/sv-benchmarks/c/eca-rers2012/Problem02_label23.c [2021-10-29 05:41:32,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/data/1321af4fd/604c297e3ff140e3b8ac4911cd8f040a/FLAGb9f194101 [2021-10-29 05:41:32,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/data/1321af4fd/604c297e3ff140e3b8ac4911cd8f040a [2021-10-29 05:41:32,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:41:32,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:41:32,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:41:32,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:41:32,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:41:32,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:41:32" (1/1) ... [2021-10-29 05:41:32,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1528d9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:32, skipping insertion in model container [2021-10-29 05:41:32,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:41:32" (1/1) ... [2021-10-29 05:41:32,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:41:32,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:41:32,851 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_f2276dc1-9eac-41bc-a7fe-fea47301eba7/sv-benchmarks/c/eca-rers2012/Problem02_label23.c[20538,20551] [2021-10-29 05:41:32,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:41:32,888 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:41:32,986 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_f2276dc1-9eac-41bc-a7fe-fea47301eba7/sv-benchmarks/c/eca-rers2012/Problem02_label23.c[20538,20551] [2021-10-29 05:41:32,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:41:33,036 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:41:33,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33 WrapperNode [2021-10-29 05:41:33,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:41:33,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:41:33,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:41:33,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:41:33,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:41:33,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:41:33,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:41:33,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:41:33,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:41:33,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:41:33,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:41:33,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:41:33,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (1/1) ... [2021-10-29 05:41:33,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:41:33,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:41:33,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:41:33,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:41:33,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:41:33,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:41:33,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:41:33,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:41:35,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:41:35,192 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 05:41:35,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:41:35 BoogieIcfgContainer [2021-10-29 05:41:35,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:41:35,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:41:35,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:41:35,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:41:35,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:41:32" (1/3) ... [2021-10-29 05:41:35,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48468f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:41:35, skipping insertion in model container [2021-10-29 05:41:35,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:33" (2/3) ... [2021-10-29 05:41:35,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48468f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:41:35, skipping insertion in model container [2021-10-29 05:41:35,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:41:35" (3/3) ... [2021-10-29 05:41:35,206 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label23.c [2021-10-29 05:41:35,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:41:35,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:41:35,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:41:35,283 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 [2021-10-29 05:41:35,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:41:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-29 05:41:35,312 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:35,313 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:35,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:35,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1243333622, now seen corresponding path program 1 times [2021-10-29 05:41:35,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:35,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658665208] [2021-10-29 05:41:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:35,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:35,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:35,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658665208] [2021-10-29 05:41:35,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658665208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:35,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:35,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:41:35,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222764364] [2021-10-29 05:41:35,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:35,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:35,756 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:36,209 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-29 05:41:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-10-29 05:41:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:36,229 INFO L225 Difference]: With dead ends: 251 [2021-10-29 05:41:36,229 INFO L226 Difference]: Without dead ends: 163 [2021-10-29 05:41:36,232 INFO L786 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 [2021-10-29 05:41:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-29 05:41:36,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-29 05:41:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:36,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-29 05:41:36,285 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-29 05:41:36,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:36,286 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-29 05:41:36,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-29 05:41:36,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-29 05:41:36,291 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:36,291 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:36,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:41:36,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1833075691, now seen corresponding path program 1 times [2021-10-29 05:41:36,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:36,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393684219] [2021-10-29 05:41:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:36,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:36,357 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:36,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393684219] [2021-10-29 05:41:36,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393684219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:36,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:36,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:41:36,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393132915] [2021-10-29 05:41:36,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:36,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:36,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:36,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:36,361 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:36,720 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-29 05:41:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:36,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-10-29 05:41:36,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:36,729 INFO L225 Difference]: With dead ends: 485 [2021-10-29 05:41:36,730 INFO L226 Difference]: Without dead ends: 323 [2021-10-29 05:41:36,732 INFO L786 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 [2021-10-29 05:41:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-29 05:41:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-29 05:41:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.515527950310559) internal successors, (488), 322 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-29 05:41:36,767 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-29 05:41:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:36,768 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-29 05:41:36,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-29 05:41:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-29 05:41:36,772 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:36,772 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:36,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:41:36,773 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:36,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2045172432, now seen corresponding path program 1 times [2021-10-29 05:41:36,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:36,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69539461] [2021-10-29 05:41:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:36,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:36,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:36,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69539461] [2021-10-29 05:41:36,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69539461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:36,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:36,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:41:36,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851483549] [2021-10-29 05:41:36,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:36,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:36,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:36,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:36,890 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:37,332 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2021-10-29 05:41:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-10-29 05:41:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:37,338 INFO L225 Difference]: With dead ends: 805 [2021-10-29 05:41:37,339 INFO L226 Difference]: Without dead ends: 483 [2021-10-29 05:41:37,344 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-29 05:41:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-29 05:41:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4066390041493777) internal successors, (678), 482 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2021-10-29 05:41:37,381 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 89 [2021-10-29 05:41:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2021-10-29 05:41:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2021-10-29 05:41:37,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-29 05:41:37,387 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:37,388 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:37,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:41:37,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2122130693, now seen corresponding path program 1 times [2021-10-29 05:41:37,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:37,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120596554] [2021-10-29 05:41:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:37,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:37,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:37,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120596554] [2021-10-29 05:41:37,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120596554] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:37,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:37,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:41:37,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897888705] [2021-10-29 05:41:37,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:37,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:37,511 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:37,934 INFO L93 Difference]: Finished difference Result 1205 states and 1701 transitions. [2021-10-29 05:41:37,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:37,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-10-29 05:41:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:37,941 INFO L225 Difference]: With dead ends: 1205 [2021-10-29 05:41:37,941 INFO L226 Difference]: Without dead ends: 723 [2021-10-29 05:41:37,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-29 05:41:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-29 05:41:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.31994459833795) internal successors, (953), 722 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 953 transitions. [2021-10-29 05:41:37,970 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 953 transitions. Word has length 89 [2021-10-29 05:41:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:37,970 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 953 transitions. [2021-10-29 05:41:37,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 953 transitions. [2021-10-29 05:41:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-29 05:41:37,974 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:37,974 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:37,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:41:37,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash 131061231, now seen corresponding path program 1 times [2021-10-29 05:41:37,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:37,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258668887] [2021-10-29 05:41:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:37,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:41:38,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:38,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258668887] [2021-10-29 05:41:38,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258668887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:38,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:38,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:41:38,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826081014] [2021-10-29 05:41:38,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:38,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:38,019 INFO L87 Difference]: Start difference. First operand 723 states and 953 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:38,353 INFO L93 Difference]: Finished difference Result 1765 states and 2386 transitions. [2021-10-29 05:41:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:38,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 94 [2021-10-29 05:41:38,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:38,363 INFO L225 Difference]: With dead ends: 1765 [2021-10-29 05:41:38,363 INFO L226 Difference]: Without dead ends: 1043 [2021-10-29 05:41:38,364 INFO L786 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 [2021-10-29 05:41:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-29 05:41:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2021-10-29 05:41:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.2994241842610366) internal successors, (1354), 1042 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1354 transitions. [2021-10-29 05:41:38,395 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1354 transitions. Word has length 94 [2021-10-29 05:41:38,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:38,395 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1354 transitions. [2021-10-29 05:41:38,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1354 transitions. [2021-10-29 05:41:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-29 05:41:38,399 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:38,399 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:38,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:41:38,399 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:38,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1929388493, now seen corresponding path program 1 times [2021-10-29 05:41:38,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:38,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862088384] [2021-10-29 05:41:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:38,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-29 05:41:38,505 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:38,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862088384] [2021-10-29 05:41:38,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862088384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:38,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:38,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:41:38,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284207052] [2021-10-29 05:41:38,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:38,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:38,508 INFO L87 Difference]: Start difference. First operand 1043 states and 1354 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:38,858 INFO L93 Difference]: Finished difference Result 1765 states and 2342 transitions. [2021-10-29 05:41:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:38,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 110 [2021-10-29 05:41:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:38,871 INFO L225 Difference]: With dead ends: 1765 [2021-10-29 05:41:38,872 INFO L226 Difference]: Without dead ends: 1763 [2021-10-29 05:41:38,873 INFO L786 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 [2021-10-29 05:41:38,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-29 05:41:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1203. [2021-10-29 05:41:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.3635607321131447) internal successors, (1639), 1202 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1639 transitions. [2021-10-29 05:41:38,921 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1639 transitions. Word has length 110 [2021-10-29 05:41:38,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:38,922 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1639 transitions. [2021-10-29 05:41:38,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1639 transitions. [2021-10-29 05:41:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-29 05:41:38,926 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:38,927 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:38,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:41:38,927 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1360787292, now seen corresponding path program 1 times [2021-10-29 05:41:38,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:38,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19575988] [2021-10-29 05:41:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:38,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-29 05:41:39,015 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:39,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19575988] [2021-10-29 05:41:39,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19575988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:39,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:39,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:41:39,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722070228] [2021-10-29 05:41:39,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:39,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:39,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:39,017 INFO L87 Difference]: Start difference. First operand 1203 states and 1639 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:39,310 INFO L93 Difference]: Finished difference Result 2405 states and 3277 transitions. [2021-10-29 05:41:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:39,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 135 [2021-10-29 05:41:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:39,317 INFO L225 Difference]: With dead ends: 2405 [2021-10-29 05:41:39,317 INFO L226 Difference]: Without dead ends: 1203 [2021-10-29 05:41:39,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-29 05:41:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1123. [2021-10-29 05:41:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.3270944741532977) internal successors, (1489), 1122 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1489 transitions. [2021-10-29 05:41:39,354 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1489 transitions. Word has length 135 [2021-10-29 05:41:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:39,355 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1489 transitions. [2021-10-29 05:41:39,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1489 transitions. [2021-10-29 05:41:39,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-29 05:41:39,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:39,359 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:39,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:41:39,359 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:39,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash -396843482, now seen corresponding path program 1 times [2021-10-29 05:41:39,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:39,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161501632] [2021-10-29 05:41:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:39,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-29 05:41:39,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:39,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161501632] [2021-10-29 05:41:39,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161501632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:39,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:39,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:41:39,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105811247] [2021-10-29 05:41:39,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:39,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:39,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:39,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:39,463 INFO L87 Difference]: Start difference. First operand 1123 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:39,775 INFO L93 Difference]: Finished difference Result 2085 states and 2771 transitions. [2021-10-29 05:41:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 139 [2021-10-29 05:41:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:39,781 INFO L225 Difference]: With dead ends: 2085 [2021-10-29 05:41:39,782 INFO L226 Difference]: Without dead ends: 963 [2021-10-29 05:41:39,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-29 05:41:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-29 05:41:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.2661122661122661) internal successors, (1218), 962 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1218 transitions. [2021-10-29 05:41:39,810 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1218 transitions. Word has length 139 [2021-10-29 05:41:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:39,810 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1218 transitions. [2021-10-29 05:41:39,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1218 transitions. [2021-10-29 05:41:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-29 05:41:39,814 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:39,815 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:39,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:41:39,815 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1420867654, now seen corresponding path program 1 times [2021-10-29 05:41:39,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:39,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268947094] [2021-10-29 05:41:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:39,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-29 05:41:39,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:39,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268947094] [2021-10-29 05:41:39,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268947094] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:39,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:39,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:41:39,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160253524] [2021-10-29 05:41:39,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:39,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:39,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:39,864 INFO L87 Difference]: Start difference. First operand 963 states and 1218 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:40,045 INFO L93 Difference]: Finished difference Result 1765 states and 2260 transitions. [2021-10-29 05:41:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:40,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 149 [2021-10-29 05:41:40,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:40,060 INFO L225 Difference]: With dead ends: 1765 [2021-10-29 05:41:40,060 INFO L226 Difference]: Without dead ends: 723 [2021-10-29 05:41:40,062 INFO L786 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 [2021-10-29 05:41:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-29 05:41:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-29 05:41:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.2229916897506925) internal successors, (883), 722 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 883 transitions. [2021-10-29 05:41:40,083 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 883 transitions. Word has length 149 [2021-10-29 05:41:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:40,083 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 883 transitions. [2021-10-29 05:41:40,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 883 transitions. [2021-10-29 05:41:40,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-29 05:41:40,087 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:40,087 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:40,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 05:41:40,087 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash 472512044, now seen corresponding path program 1 times [2021-10-29 05:41:40,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:40,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348135847] [2021-10-29 05:41:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:40,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-29 05:41:40,185 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:40,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348135847] [2021-10-29 05:41:40,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348135847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:40,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:40,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:41:40,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078257383] [2021-10-29 05:41:40,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:40,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:40,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:40,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:40,188 INFO L87 Difference]: Start difference. First operand 723 states and 883 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:40,495 INFO L93 Difference]: Finished difference Result 1605 states and 2004 transitions. [2021-10-29 05:41:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:40,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 178 [2021-10-29 05:41:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:40,501 INFO L225 Difference]: With dead ends: 1605 [2021-10-29 05:41:40,501 INFO L226 Difference]: Without dead ends: 963 [2021-10-29 05:41:40,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-29 05:41:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-29 05:41:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.2162162162162162) internal successors, (1170), 962 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1170 transitions. [2021-10-29 05:41:40,527 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1170 transitions. Word has length 178 [2021-10-29 05:41:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:40,527 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1170 transitions. [2021-10-29 05:41:40,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1170 transitions. [2021-10-29 05:41:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-29 05:41:40,532 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:40,532 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:40,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 05:41:40,532 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1447470293, now seen corresponding path program 1 times [2021-10-29 05:41:40,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:40,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662456589] [2021-10-29 05:41:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:40,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:41:40,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:40,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662456589] [2021-10-29 05:41:40,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662456589] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:41:40,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696041876] [2021-10-29 05:41:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:40,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:41:40,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:41:40,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:41:40,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:41:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:40,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:41:40,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:41:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-29 05:41:41,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:41:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-29 05:41:41,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696041876] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:41,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:41:41,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-29 05:41:41,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399142002] [2021-10-29 05:41:41,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:41,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:41:41,795 INFO L87 Difference]: Start difference. First operand 963 states and 1170 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:42,087 INFO L93 Difference]: Finished difference Result 2165 states and 2686 transitions. [2021-10-29 05:41:42,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:42,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 178 [2021-10-29 05:41:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:42,096 INFO L225 Difference]: With dead ends: 2165 [2021-10-29 05:41:42,096 INFO L226 Difference]: Without dead ends: 1283 [2021-10-29 05:41:42,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:41:42,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2021-10-29 05:41:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2021-10-29 05:41:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.204658901830283) internal successors, (1448), 1202 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1448 transitions. [2021-10-29 05:41:42,133 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1448 transitions. Word has length 178 [2021-10-29 05:41:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:42,134 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1448 transitions. [2021-10-29 05:41:42,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1448 transitions. [2021-10-29 05:41:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-29 05:41:42,138 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:42,139 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:42,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:41:42,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:41:42,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash -57926641, now seen corresponding path program 1 times [2021-10-29 05:41:42,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:42,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018511742] [2021-10-29 05:41:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:42,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-29 05:41:42,438 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:42,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018511742] [2021-10-29 05:41:42,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018511742] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:42,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:42,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:41:42,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008120187] [2021-10-29 05:41:42,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:41:42,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:41:42,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:42,444 INFO L87 Difference]: Start difference. First operand 1203 states and 1448 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:42,717 INFO L93 Difference]: Finished difference Result 2485 states and 2988 transitions. [2021-10-29 05:41:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:41:42,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 191 [2021-10-29 05:41:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:42,723 INFO L225 Difference]: With dead ends: 2485 [2021-10-29 05:41:42,723 INFO L226 Difference]: Without dead ends: 963 [2021-10-29 05:41:42,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:41:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-29 05:41:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-29 05:41:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.104989604989605) internal successors, (1063), 962 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1063 transitions. [2021-10-29 05:41:42,768 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1063 transitions. Word has length 191 [2021-10-29 05:41:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:42,768 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1063 transitions. [2021-10-29 05:41:42,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1063 transitions. [2021-10-29 05:41:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-10-29 05:41:42,773 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:42,774 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:42,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 05:41:42,774 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:42,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash 96896167, now seen corresponding path program 1 times [2021-10-29 05:41:42,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:42,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855541004] [2021-10-29 05:41:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:42,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-29 05:41:42,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:42,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855541004] [2021-10-29 05:41:42,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855541004] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:42,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:42,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:41:42,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393829380] [2021-10-29 05:41:42,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:41:42,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:42,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:41:42,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:41:42,894 INFO L87 Difference]: Start difference. First operand 963 states and 1063 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:43,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:43,275 INFO L93 Difference]: Finished difference Result 1845 states and 2042 transitions. [2021-10-29 05:41:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:41:43,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 249 [2021-10-29 05:41:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:43,281 INFO L225 Difference]: With dead ends: 1845 [2021-10-29 05:41:43,281 INFO L226 Difference]: Without dead ends: 963 [2021-10-29 05:41:43,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:41:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-29 05:41:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-29 05:41:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.0956340956340955) internal successors, (1054), 962 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1054 transitions. [2021-10-29 05:41:43,308 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1054 transitions. Word has length 249 [2021-10-29 05:41:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:43,309 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1054 transitions. [2021-10-29 05:41:43,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1054 transitions. [2021-10-29 05:41:43,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-10-29 05:41:43,314 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:43,314 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:43,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 05:41:43,314 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:43,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:43,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2019579956, now seen corresponding path program 1 times [2021-10-29 05:41:43,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:43,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70953978] [2021-10-29 05:41:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:43,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-10-29 05:41:43,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:43,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70953978] [2021-10-29 05:41:43,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70953978] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:43,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:41:43,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:41:43,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568851888] [2021-10-29 05:41:43,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:41:43,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:41:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:41:43,420 INFO L87 Difference]: Start difference. First operand 963 states and 1054 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:43,763 INFO L93 Difference]: Finished difference Result 1845 states and 2024 transitions. [2021-10-29 05:41:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:41:43,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 262 [2021-10-29 05:41:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:43,769 INFO L225 Difference]: With dead ends: 1845 [2021-10-29 05:41:43,769 INFO L226 Difference]: Without dead ends: 963 [2021-10-29 05:41:43,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:41:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-29 05:41:43,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 883. [2021-10-29 05:41:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.09297052154195) internal successors, (964), 882 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 964 transitions. [2021-10-29 05:41:43,798 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 964 transitions. Word has length 262 [2021-10-29 05:41:43,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:43,798 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 964 transitions. [2021-10-29 05:41:43,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:43,799 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 964 transitions. [2021-10-29 05:41:43,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-10-29 05:41:43,805 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:41:43,805 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:43,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-29 05:41:43,805 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:41:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:41:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1593361058, now seen corresponding path program 1 times [2021-10-29 05:41:43,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:41:43,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913767278] [2021-10-29 05:41:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:43,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:41:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 273 proven. 94 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-10-29 05:41:44,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:41:44,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913767278] [2021-10-29 05:41:44,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913767278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:41:44,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825020581] [2021-10-29 05:41:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:41:44,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:41:44,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:41:44,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:41:44,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:41:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:41:44,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:41:44,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:41:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-10-29 05:41:45,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:41:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-10-29 05:41:45,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825020581] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:41:45,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:41:45,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2021-10-29 05:41:45,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611869090] [2021-10-29 05:41:45,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:41:45,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:41:45,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:41:45,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:41:45,595 INFO L87 Difference]: Start difference. First operand 883 states and 964 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:45,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:41:45,959 INFO L93 Difference]: Finished difference Result 1443 states and 1563 transitions. [2021-10-29 05:41:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:41:45,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 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 284 [2021-10-29 05:41:45,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:41:45,960 INFO L225 Difference]: With dead ends: 1443 [2021-10-29 05:41:45,960 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:41:45,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:41:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:41:45,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:41:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:41:45,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2021-10-29 05:41:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:41:45,963 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:41:45,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:41:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:41:45,964 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:41:45,966 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:41:46,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:41:46,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-29 05:41:46,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:41:46,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:46,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:46,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:41:46,820 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-29 05:41:46,820 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-29 05:41:46,820 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-29 05:41:46,820 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-29 05:41:46,820 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-29 05:41:46,820 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-29 05:41:46,821 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L580-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L581(line 581) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-29 05:41:46,822 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-29 05:41:46,823 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-29 05:41:46,824 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-29 05:41:46,824 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-29 05:41:46,824 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-29 05:41:46,824 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 581) no Hoare annotation was computed. [2021-10-29 05:41:46,824 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-29 05:41:46,824 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-29 05:41:46,825 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-29 05:41:46,825 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-29 05:41:46,825 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-29 05:41:46,825 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-29 05:41:46,825 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-29 05:41:46,825 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-29 05:41:46,825 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-29 05:41:46,826 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-29 05:41:46,826 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-29 05:41:46,826 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-29 05:41:46,826 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-29 05:41:46,826 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-29 05:41:46,826 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-29 05:41:46,826 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-29 05:41:46,827 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse9 (<= 9 ~a28~0)) (.cse0 (= ~a25~0 1)) (.cse7 (<= ~a17~0 7)) (.cse5 (<= ~a19~0 0)) (.cse10 (= ~a25~0 ~a11~0)) (.cse4 (= ~a25~0 0)) (.cse11 (<= ~a28~0 7)) (.cse6 (<= 10 ~a28~0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse8 (<= ~a28~0 10)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 11 ~a28~0) .cse0 .cse2 .cse3) (and .cse2 .cse4 (< ~a28~0 9) .cse5) (and .cse6 .cse7 .cse8 .cse4 .cse5) (and .cse9 .cse2 .cse8 .cse3 .cse4) (and .cse10 .cse0 .cse2 .cse3 .cse11) (and .cse6 .cse0 .cse1 .cse2 .cse8) (and .cse9 .cse0 .cse7 .cse8 .cse5) (and .cse10 .cse1 .cse2 .cse3 .cse4 .cse11) (and .cse6 .cse1 .cse2 .cse8 .cse3))) [2021-10-29 05:41:46,827 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-29 05:41:46,827 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-29 05:41:46,827 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-29 05:41:46,828 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-29 05:41:46,828 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-29 05:41:46,828 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-29 05:41:46,828 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-29 05:41:46,828 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-29 05:41:46,828 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:41:46,828 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-29 05:41:46,829 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-29 05:41:46,829 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse9 (<= 9 ~a28~0)) (.cse0 (= ~a25~0 1)) (.cse7 (<= ~a17~0 7)) (.cse5 (<= ~a19~0 0)) (.cse10 (= ~a25~0 ~a11~0)) (.cse4 (= ~a25~0 0)) (.cse11 (<= ~a28~0 7)) (.cse6 (<= 10 ~a28~0)) (.cse1 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse8 (<= ~a28~0 10)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 11 ~a28~0) .cse0 .cse2 .cse3) (and .cse2 .cse4 (< ~a28~0 9) .cse5) (and .cse6 .cse7 .cse8 .cse4 .cse5) (and .cse9 .cse2 .cse8 .cse3 .cse4) (and .cse10 .cse0 .cse2 .cse3 .cse11) (and .cse6 .cse0 .cse1 .cse2 .cse8) (and .cse9 .cse0 .cse7 .cse8 .cse5) (and .cse10 .cse1 .cse2 .cse3 .cse4 .cse11) (and .cse6 .cse1 .cse2 .cse8 .cse3))) [2021-10-29 05:41:46,829 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-29 05:41:46,829 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-29 05:41:46,829 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-29 05:41:46,830 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-29 05:41:46,830 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-29 05:41:46,830 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-29 05:41:46,830 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-29 05:41:46,830 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-29 05:41:46,830 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-29 05:41:46,830 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-29 05:41:46,831 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-29 05:41:46,831 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-29 05:41:46,831 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-29 05:41:46,831 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-29 05:41:46,831 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-29 05:41:46,831 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-29 05:41:46,834 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:41:46,836 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:41:46,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:41:46 BoogieIcfgContainer [2021-10-29 05:41:46,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:41:46,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:41:46,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:41:46,865 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:41:46,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:41:35" (3/4) ... [2021-10-29 05:41:46,869 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:41:46,891 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-29 05:41:46,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-29 05:41:46,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:41:46,896 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:41:47,017 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:41:47,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:41:47,019 INFO L168 Benchmark]: Toolchain (without parser) took 14600.10 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 88.2 MB in the beginning and 172.1 MB in the end (delta: -83.9 MB). Peak memory consumption was 126.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:47,020 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 51.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:41:47,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.67 ms. Allocated memory is still 123.7 MB. Free memory was 87.9 MB in the beginning and 83.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:47,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.02 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 78.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:47,021 INFO L168 Benchmark]: Boogie Preprocessor took 85.28 ms. Allocated memory is still 123.7 MB. Free memory was 78.3 MB in the beginning and 74.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:47,021 INFO L168 Benchmark]: RCFGBuilder took 1957.92 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 74.1 MB in the beginning and 90.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:47,022 INFO L168 Benchmark]: TraceAbstraction took 11666.06 ms. Allocated memory was 148.9 MB in the beginning and 218.1 MB in the end (delta: 69.2 MB). Free memory was 90.9 MB in the beginning and 63.3 MB in the end (delta: 27.6 MB). Peak memory consumption was 95.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:47,022 INFO L168 Benchmark]: Witness Printer took 152.69 ms. Allocated memory is still 218.1 MB. Free memory was 63.3 MB in the beginning and 172.1 MB in the end (delta: -108.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:41:47,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 40.2 MB in the beginning and 40.2 MB in the end (delta: 51.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 616.67 ms. Allocated memory is still 123.7 MB. Free memory was 87.9 MB in the beginning and 83.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.02 ms. Allocated memory is still 123.7 MB. Free memory was 83.7 MB in the beginning and 78.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.28 ms. Allocated memory is still 123.7 MB. Free memory was 78.3 MB in the beginning and 74.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1957.92 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 74.1 MB in the beginning and 90.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11666.06 ms. Allocated memory was 148.9 MB in the beginning and 218.1 MB in the end (delta: 69.2 MB). Free memory was 90.9 MB in the beginning and 63.3 MB in the end (delta: 27.6 MB). Peak memory consumption was 95.6 MB. Max. memory is 16.1 GB. * Witness Printer took 152.69 ms. Allocated memory is still 218.1 MB. Free memory was 63.3 MB in the beginning and 172.1 MB in the end (delta: -108.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 581]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 15, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1264 SDtfs, 1080 SDslu, 105 SDs, 0 SdLazy, 3700 SolverSat, 715 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 965 GetRequests, 940 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=6, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 800 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 33 NumberOfFragments, 311 HoareAnnotationTreeSize, 3 FomulaSimplifications, 290 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 354 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2773 NumberOfCodeBlocks, 2773 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3216 ConstructedInterpolants, 0 QuantifiedInterpolants, 8812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 917 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 3284/3436 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (((11 <= a28 && a25 == 1) && a17 <= 8) && a19 == 1)) || (((a17 <= 8 && a25 == 0) && a28 < 9) && a19 <= 0)) || ((((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0) && a19 <= 0)) || ((((9 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((((10 <= a28 && a25 == 1) && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10) && a19 <= 0)) || (((((a25 == a11 && 8 <= a17) && a17 <= 8) && a19 == 1) && a25 == 0) && a28 <= 7)) || ((((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (((11 <= a28 && a25 == 1) && a17 <= 8) && a19 == 1)) || (((a17 <= 8 && a25 == 0) && a28 < 9) && a19 <= 0)) || ((((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0) && a19 <= 0)) || ((((9 <= a28 && a17 <= 8) && a28 <= 10) && a19 == 1) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 8) && a19 == 1) && a28 <= 7)) || ((((10 <= a28 && a25 == 1) && 8 <= a17) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10) && a19 <= 0)) || (((((a25 == a11 && 8 <= a17) && a17 <= 8) && a19 == 1) && a25 == 0) && a28 <= 7)) || ((((10 <= a28 && 8 <= a17) && a17 <= 8) && a28 <= 10) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:41:47,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2276dc1-9eac-41bc-a7fe-fea47301eba7/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...