./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:37:11,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:37:11,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:37:11,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:37:11,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:37:11,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:37:11,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:37:11,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:37:11,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:37:11,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:37:11,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:37:11,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:37:11,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:37:11,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:37:11,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:37:11,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:37:11,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:37:11,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:37:11,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:37:11,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:37:11,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:37:11,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:37:11,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:37:11,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:37:11,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:37:11,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:37:11,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:37:11,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:37:11,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:37:11,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:37:11,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:37:11,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:37:11,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:37:11,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:37:11,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:37:11,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:37:11,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:37:11,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:37:11,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:37:11,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:37:11,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:37:11,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:37:11,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:37:11,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:37:11,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:37:11,844 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:37:11,845 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:37:11,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:37:11,845 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:37:11,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:37:11,845 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:37:11,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:37:11,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:37:11,846 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:37:11,846 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:37:11,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:37:11,851 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:37:11,851 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:37:11,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:37:11,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:37:11,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:37:11,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:37:11,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:37:11,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:37:11,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:37:11,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:37:11,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:37:11,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:37:11,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:37:11,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:37:11,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:37:11,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:37:11,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:37:11,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:11,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:37:11,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:37:11,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:37:11,859 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:37:11,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:37:11,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:37:11,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:37:11,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:37:11,860 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_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2021-11-13 02:37:12,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:37:12,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:37:12,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:37:12,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:37:12,278 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:37:12,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-11-13 02:37:12,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/data/d6b88ca38/c7ab7629599a4593ad8dafa405a1b7c2/FLAG0f08cbf11 [2021-11-13 02:37:12,986 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:37:12,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-11-13 02:37:13,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/data/d6b88ca38/c7ab7629599a4593ad8dafa405a1b7c2/FLAG0f08cbf11 [2021-11-13 02:37:13,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/data/d6b88ca38/c7ab7629599a4593ad8dafa405a1b7c2 [2021-11-13 02:37:13,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:37:13,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:37:13,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:13,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:37:13,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:37:13,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fd7a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13, skipping insertion in model container [2021-11-13 02:37:13,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:37:13,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:37:13,597 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_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2021-11-13 02:37:13,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:13,612 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:37:13,655 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_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2021-11-13 02:37:13,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:37:13,672 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:37:13,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13 WrapperNode [2021-11-13 02:37:13,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:37:13,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:13,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:37:13,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:37:13,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:37:13,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:37:13,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:37:13,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:37:13,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:37:13,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:37:13,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:37:13,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:37:13,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (1/1) ... [2021-11-13 02:37:13,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:37:13,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:37:13,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:37:13,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:37:13,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-13 02:37:13,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-13 02:37:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-13 02:37:13,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-13 02:37:13,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-13 02:37:13,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-13 02:37:13,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:37:13,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:37:13,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 02:37:13,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-13 02:37:13,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-13 02:37:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:37:13,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:37:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 02:37:13,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:37:13,907 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-13 02:37:14,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:37:14,651 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:37:14,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:14 BoogieIcfgContainer [2021-11-13 02:37:14,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:37:14,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:37:14,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:37:14,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:37:14,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:37:13" (1/3) ... [2021-11-13 02:37:14,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba80651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:14, skipping insertion in model container [2021-11-13 02:37:14,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:37:13" (2/3) ... [2021-11-13 02:37:14,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba80651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:37:14, skipping insertion in model container [2021-11-13 02:37:14,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:14" (3/3) ... [2021-11-13 02:37:14,674 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2021-11-13 02:37:14,680 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-13 02:37:14,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:37:14,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:37:14,680 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-13 02:37:14,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,759 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,763 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,766 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,772 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,773 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,774 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,775 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,776 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,777 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,778 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,779 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,780 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,780 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,780 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,781 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,781 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,782 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,782 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,782 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,784 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,784 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,784 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,784 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,785 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,785 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,785 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,785 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,786 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,790 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,791 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,792 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,794 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,794 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,795 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,795 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,796 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,797 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,809 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,817 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,819 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,820 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,821 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,821 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,824 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-13 02:37:14,829 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-13 02:37:14,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:37:14,907 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:37:14,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-13 02:37:14,931 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-13 02:37:14,948 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 152 transitions, 328 flow [2021-11-13 02:37:14,955 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 152 transitions, 328 flow [2021-11-13 02:37:14,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2021-11-13 02:37:15,099 INFO L129 PetriNetUnfolder]: 2/149 cut-off events. [2021-11-13 02:37:15,102 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-13 02:37:15,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2021-11-13 02:37:15,115 INFO L116 LiptonReduction]: Number of co-enabled transitions 2184 [2021-11-13 02:37:21,536 INFO L131 LiptonReduction]: Checked pairs total: 14218 [2021-11-13 02:37:21,536 INFO L133 LiptonReduction]: Total number of compositions: 110 [2021-11-13 02:37:21,545 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 47 transitions, 118 flow [2021-11-13 02:37:21,692 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:21,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:21,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:21,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:21,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1048674286, now seen corresponding path program 1 times [2021-11-13 02:37:21,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:21,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813020379] [2021-11-13 02:37:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:21,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:22,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:22,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813020379] [2021-11-13 02:37:22,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813020379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:22,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:22,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:22,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739684253] [2021-11-13 02:37:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:22,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:22,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:22,595 INFO L87 Difference]: Start difference. First operand has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 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 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:23,477 INFO L93 Difference]: Finished difference Result 3947 states and 11894 transitions. [2021-11-13 02:37:23,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:23,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:23,551 INFO L225 Difference]: With dead ends: 3947 [2021-11-13 02:37:23,551 INFO L226 Difference]: Without dead ends: 3846 [2021-11-13 02:37:23,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:37:23,560 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 169 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 475.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.25ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 657.71ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:23,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 13 Invalid, 887 Unknown, 0 Unchecked, 10.25ms Time], IncrementalHoareTripleChecker [5 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 657.71ms Time] [2021-11-13 02:37:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-11-13 02:37:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3226. [2021-11-13 02:37:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3225 states have (on average 3.133953488372093) internal successors, (10107), 3225 states have internal predecessors, (10107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:23,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 10107 transitions. [2021-11-13 02:37:23,826 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 10107 transitions. Word has length 43 [2021-11-13 02:37:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:23,827 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 10107 transitions. [2021-11-13 02:37:23,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 10107 transitions. [2021-11-13 02:37:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:23,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:23,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:23,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:37:23,843 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash 831749262, now seen corresponding path program 2 times [2021-11-13 02:37:23,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:23,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977980260] [2021-11-13 02:37:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:23,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:24,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:24,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977980260] [2021-11-13 02:37:24,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977980260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:24,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:24,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:37:24,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027521527] [2021-11-13 02:37:24,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:24,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:37:24,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:37:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:24,062 INFO L87 Difference]: Start difference. First operand 3226 states and 10107 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:24,185 INFO L93 Difference]: Finished difference Result 3226 states and 10015 transitions. [2021-11-13 02:37:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:37:24,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:24,218 INFO L225 Difference]: With dead ends: 3226 [2021-11-13 02:37:24,218 INFO L226 Difference]: Without dead ends: 3226 [2021-11-13 02:37:24,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:24,222 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:24,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 16 Invalid, 92 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 80.27ms Time] [2021-11-13 02:37:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3226 states. [2021-11-13 02:37:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3226 to 3226. [2021-11-13 02:37:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3225 states have (on average 3.105426356589147) internal successors, (10015), 3225 states have internal predecessors, (10015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 10015 transitions. [2021-11-13 02:37:24,437 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 10015 transitions. Word has length 43 [2021-11-13 02:37:24,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:24,437 INFO L470 AbstractCegarLoop]: Abstraction has 3226 states and 10015 transitions. [2021-11-13 02:37:24,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 10015 transitions. [2021-11-13 02:37:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:24,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:24,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:24,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:37:24,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash -451905624, now seen corresponding path program 3 times [2021-11-13 02:37:24,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:24,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749575393] [2021-11-13 02:37:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:24,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:24,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:24,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749575393] [2021-11-13 02:37:24,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749575393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:24,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:24,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:24,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79613840] [2021-11-13 02:37:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:24,743 INFO L87 Difference]: Start difference. First operand 3226 states and 10015 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:25,209 INFO L93 Difference]: Finished difference Result 6130 states and 19254 transitions. [2021-11-13 02:37:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:25,270 INFO L225 Difference]: With dead ends: 6130 [2021-11-13 02:37:25,270 INFO L226 Difference]: Without dead ends: 6130 [2021-11-13 02:37:25,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:37:25,272 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 145 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.23ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 357.24ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:25,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 94 Invalid, 507 Unknown, 0 Unchecked, 5.23ms Time], IncrementalHoareTripleChecker [34 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 357.24ms Time] [2021-11-13 02:37:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2021-11-13 02:37:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4340. [2021-11-13 02:37:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4339 states have (on average 3.115694860566951) internal successors, (13519), 4339 states have internal predecessors, (13519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 13519 transitions. [2021-11-13 02:37:25,571 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 13519 transitions. Word has length 43 [2021-11-13 02:37:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:25,572 INFO L470 AbstractCegarLoop]: Abstraction has 4340 states and 13519 transitions. [2021-11-13 02:37:25,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:25,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 13519 transitions. [2021-11-13 02:37:25,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:25,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:25,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:25,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:37:25,591 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1312843244, now seen corresponding path program 4 times [2021-11-13 02:37:25,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:25,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025763213] [2021-11-13 02:37:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:25,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:25,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:25,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025763213] [2021-11-13 02:37:25,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025763213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:25,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:25,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:25,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100425008] [2021-11-13 02:37:25,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:25,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:25,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:25,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:25,885 INFO L87 Difference]: Start difference. First operand 4340 states and 13519 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:26,609 INFO L93 Difference]: Finished difference Result 9400 states and 29568 transitions. [2021-11-13 02:37:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:37:26,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:26,696 INFO L225 Difference]: With dead ends: 9400 [2021-11-13 02:37:26,697 INFO L226 Difference]: Without dead ends: 9400 [2021-11-13 02:37:26,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:37:26,702 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 174 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 418.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.82ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 534.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:26,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 130 Invalid, 698 Unknown, 0 Unchecked, 6.82ms Time], IncrementalHoareTripleChecker [56 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 534.79ms Time] [2021-11-13 02:37:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2021-11-13 02:37:26,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 5496. [2021-11-13 02:37:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 5495 states have (on average 3.1022747952684258) internal successors, (17047), 5495 states have internal predecessors, (17047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 17047 transitions. [2021-11-13 02:37:27,083 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 17047 transitions. Word has length 43 [2021-11-13 02:37:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:27,085 INFO L470 AbstractCegarLoop]: Abstraction has 5496 states and 17047 transitions. [2021-11-13 02:37:27,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 17047 transitions. [2021-11-13 02:37:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:27,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:27,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:27,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 02:37:27,107 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1683822156, now seen corresponding path program 5 times [2021-11-13 02:37:27,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:27,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742343447] [2021-11-13 02:37:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:27,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:27,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:27,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742343447] [2021-11-13 02:37:27,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742343447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:27,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:27,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:27,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603806188] [2021-11-13 02:37:27,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:27,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:27,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:27,445 INFO L87 Difference]: Start difference. First operand 5496 states and 17047 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:28,009 INFO L93 Difference]: Finished difference Result 6504 states and 19966 transitions. [2021-11-13 02:37:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:28,041 INFO L225 Difference]: With dead ends: 6504 [2021-11-13 02:37:28,041 INFO L226 Difference]: Without dead ends: 6504 [2021-11-13 02:37:28,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:28,042 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.43ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:28,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 84 Invalid, 454 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [24 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 417.43ms Time] [2021-11-13 02:37:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2021-11-13 02:37:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 6144. [2021-11-13 02:37:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6144 states, 6143 states have (on average 3.0768354224320364) internal successors, (18901), 6143 states have internal predecessors, (18901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6144 states to 6144 states and 18901 transitions. [2021-11-13 02:37:28,397 INFO L78 Accepts]: Start accepts. Automaton has 6144 states and 18901 transitions. Word has length 43 [2021-11-13 02:37:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:28,397 INFO L470 AbstractCegarLoop]: Abstraction has 6144 states and 18901 transitions. [2021-11-13 02:37:28,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6144 states and 18901 transitions. [2021-11-13 02:37:28,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:28,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:28,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:28,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:37:28,420 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:28,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1608713522, now seen corresponding path program 6 times [2021-11-13 02:37:28,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:28,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533316598] [2021-11-13 02:37:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:28,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:28,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:28,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533316598] [2021-11-13 02:37:28,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533316598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:28,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:28,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:28,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35786722] [2021-11-13 02:37:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:28,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:28,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:28,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:28,578 INFO L87 Difference]: Start difference. First operand 6144 states and 18901 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:29,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:29,221 INFO L93 Difference]: Finished difference Result 7189 states and 21564 transitions. [2021-11-13 02:37:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:29,252 INFO L225 Difference]: With dead ends: 7189 [2021-11-13 02:37:29,252 INFO L226 Difference]: Without dead ends: 6800 [2021-11-13 02:37:29,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:37:29,253 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 176 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 412.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.44ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 497.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:29,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 16 Invalid, 874 Unknown, 0 Unchecked, 5.44ms Time], IncrementalHoareTripleChecker [3 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 497.53ms Time] [2021-11-13 02:37:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2021-11-13 02:37:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 5996. [2021-11-13 02:37:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 5995 states have (on average 3.069724770642202) internal successors, (18403), 5995 states have internal predecessors, (18403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 18403 transitions. [2021-11-13 02:37:29,513 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 18403 transitions. Word has length 43 [2021-11-13 02:37:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:29,514 INFO L470 AbstractCegarLoop]: Abstraction has 5996 states and 18403 transitions. [2021-11-13 02:37:29,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 18403 transitions. [2021-11-13 02:37:29,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:29,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:29,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:29,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 02:37:29,545 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash 685036104, now seen corresponding path program 7 times [2021-11-13 02:37:29,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:29,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106246534] [2021-11-13 02:37:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:29,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:29,658 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:29,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106246534] [2021-11-13 02:37:29,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106246534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:29,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:29,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:37:29,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528905923] [2021-11-13 02:37:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:29,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:37:29,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:37:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:29,661 INFO L87 Difference]: Start difference. First operand 5996 states and 18403 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:29,769 INFO L93 Difference]: Finished difference Result 5532 states and 16669 transitions. [2021-11-13 02:37:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:37:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:29,790 INFO L225 Difference]: With dead ends: 5532 [2021-11-13 02:37:29,790 INFO L226 Difference]: Without dead ends: 5532 [2021-11-13 02:37:29,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:29,795 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.81ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:29,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 92 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 76.81ms Time] [2021-11-13 02:37:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2021-11-13 02:37:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5530. [2021-11-13 02:37:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 5529 states have (on average 3.013926568999819) internal successors, (16664), 5529 states have internal predecessors, (16664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 16664 transitions. [2021-11-13 02:37:30,074 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 16664 transitions. Word has length 43 [2021-11-13 02:37:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:30,077 INFO L470 AbstractCegarLoop]: Abstraction has 5530 states and 16664 transitions. [2021-11-13 02:37:30,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 16664 transitions. [2021-11-13 02:37:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:30,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:30,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:30,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 02:37:30,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash -117846452, now seen corresponding path program 8 times [2021-11-13 02:37:30,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:30,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096048967] [2021-11-13 02:37:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:30,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:30,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:30,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096048967] [2021-11-13 02:37:30,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096048967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:30,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:30,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:30,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884633366] [2021-11-13 02:37:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:30,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:30,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:30,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:30,514 INFO L87 Difference]: Start difference. First operand 5530 states and 16664 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:30,938 INFO L93 Difference]: Finished difference Result 6246 states and 18668 transitions. [2021-11-13 02:37:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:30,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:30,959 INFO L225 Difference]: With dead ends: 6246 [2021-11-13 02:37:30,959 INFO L226 Difference]: Without dead ends: 5902 [2021-11-13 02:37:30,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:30,961 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 298.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.55ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 352.19ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:30,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 98 Invalid, 502 Unknown, 0 Unchecked, 3.55ms Time], IncrementalHoareTripleChecker [16 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 352.19ms Time] [2021-11-13 02:37:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5902 states. [2021-11-13 02:37:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5902 to 5524. [2021-11-13 02:37:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 3.011950027159153) internal successors, (16635), 5523 states have internal predecessors, (16635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 16635 transitions. [2021-11-13 02:37:31,230 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 16635 transitions. Word has length 43 [2021-11-13 02:37:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:31,231 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 16635 transitions. [2021-11-13 02:37:31,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 16635 transitions. [2021-11-13 02:37:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:31,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:31,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:31,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 02:37:31,247 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:31,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash -24868694, now seen corresponding path program 9 times [2021-11-13 02:37:31,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:31,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180982325] [2021-11-13 02:37:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:31,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:31,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:31,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180982325] [2021-11-13 02:37:31,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180982325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:31,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:31,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:31,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507992782] [2021-11-13 02:37:31,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:31,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:31,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:31,516 INFO L87 Difference]: Start difference. First operand 5524 states and 16635 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:31,935 INFO L93 Difference]: Finished difference Result 6010 states and 17946 transitions. [2021-11-13 02:37:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:37:31,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:31,953 INFO L225 Difference]: With dead ends: 6010 [2021-11-13 02:37:31,954 INFO L226 Difference]: Without dead ends: 5724 [2021-11-13 02:37:31,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:31,956 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 356.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:31,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 118 Invalid, 557 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [17 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 356.07ms Time] [2021-11-13 02:37:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2021-11-13 02:37:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5574. [2021-11-13 02:37:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5573 states have (on average 3.0102278844428496) internal successors, (16776), 5573 states have internal predecessors, (16776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 16776 transitions. [2021-11-13 02:37:32,150 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 16776 transitions. Word has length 43 [2021-11-13 02:37:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:32,151 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 16776 transitions. [2021-11-13 02:37:32,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 16776 transitions. [2021-11-13 02:37:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:32,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:32,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:32,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 02:37:32,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:32,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:32,173 INFO L85 PathProgramCache]: Analyzing trace with hash -148383666, now seen corresponding path program 10 times [2021-11-13 02:37:32,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:32,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102153901] [2021-11-13 02:37:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:32,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:32,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:32,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102153901] [2021-11-13 02:37:32,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102153901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:32,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:32,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:32,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217440484] [2021-11-13 02:37:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:32,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:32,557 INFO L87 Difference]: Start difference. First operand 5574 states and 16776 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:32,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:32,925 INFO L93 Difference]: Finished difference Result 5848 states and 17501 transitions. [2021-11-13 02:37:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:32,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:32,942 INFO L225 Difference]: With dead ends: 5848 [2021-11-13 02:37:32,942 INFO L226 Difference]: Without dead ends: 5570 [2021-11-13 02:37:32,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:32,943 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 60 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 263.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 308.25ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:32,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 93 Invalid, 448 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [22 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 308.25ms Time] [2021-11-13 02:37:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2021-11-13 02:37:33,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5552. [2021-11-13 02:37:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5552 states, 5551 states have (on average 3.0090073860565663) internal successors, (16703), 5551 states have internal predecessors, (16703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5552 states to 5552 states and 16703 transitions. [2021-11-13 02:37:33,117 INFO L78 Accepts]: Start accepts. Automaton has 5552 states and 16703 transitions. Word has length 43 [2021-11-13 02:37:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:33,118 INFO L470 AbstractCegarLoop]: Abstraction has 5552 states and 16703 transitions. [2021-11-13 02:37:33,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5552 states and 16703 transitions. [2021-11-13 02:37:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:33,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:33,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:33,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 02:37:33,135 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:33,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:33,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1950052274, now seen corresponding path program 11 times [2021-11-13 02:37:33,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:33,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073248365] [2021-11-13 02:37:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:33,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:33,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:33,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073248365] [2021-11-13 02:37:33,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073248365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:33,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:33,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:33,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103072131] [2021-11-13 02:37:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:33,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:33,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:33,357 INFO L87 Difference]: Start difference. First operand 5552 states and 16703 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:33,725 INFO L93 Difference]: Finished difference Result 5856 states and 17499 transitions. [2021-11-13 02:37:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:33,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:33,740 INFO L225 Difference]: With dead ends: 5856 [2021-11-13 02:37:33,740 INFO L226 Difference]: Without dead ends: 5564 [2021-11-13 02:37:33,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:33,741 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 315.46ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:33,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 105 Invalid, 511 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [20 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 315.46ms Time] [2021-11-13 02:37:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2021-11-13 02:37:33,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5530. [2021-11-13 02:37:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 5529 states have (on average 3.009947549285585) internal successors, (16642), 5529 states have internal predecessors, (16642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 16642 transitions. [2021-11-13 02:37:33,924 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 16642 transitions. Word has length 43 [2021-11-13 02:37:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:33,925 INFO L470 AbstractCegarLoop]: Abstraction has 5530 states and 16642 transitions. [2021-11-13 02:37:33,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 16642 transitions. [2021-11-13 02:37:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:33,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:33,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:33,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 02:37:33,946 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:33,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589320, now seen corresponding path program 12 times [2021-11-13 02:37:33,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:33,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594611948] [2021-11-13 02:37:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:33,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:34,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:34,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594611948] [2021-11-13 02:37:34,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594611948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:34,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:34,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:37:34,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358398504] [2021-11-13 02:37:34,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:34,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:37:34,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:34,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:37:34,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:34,205 INFO L87 Difference]: Start difference. First operand 5530 states and 16642 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:34,796 INFO L93 Difference]: Finished difference Result 6494 states and 19454 transitions. [2021-11-13 02:37:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:37:34,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:34,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:34,817 INFO L225 Difference]: With dead ends: 6494 [2021-11-13 02:37:34,817 INFO L226 Difference]: Without dead ends: 6196 [2021-11-13 02:37:34,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:37:34,818 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 108 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 504.52ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:34,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 158 Invalid, 806 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [31 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 504.52ms Time] [2021-11-13 02:37:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2021-11-13 02:37:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 5294. [2021-11-13 02:37:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 3.01001322501417) internal successors, (15932), 5293 states have internal predecessors, (15932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 15932 transitions. [2021-11-13 02:37:35,008 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 15932 transitions. Word has length 43 [2021-11-13 02:37:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:35,009 INFO L470 AbstractCegarLoop]: Abstraction has 5294 states and 15932 transitions. [2021-11-13 02:37:35,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:35,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 15932 transitions. [2021-11-13 02:37:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:35,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:35,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:35,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 02:37:35,026 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2091244310, now seen corresponding path program 13 times [2021-11-13 02:37:35,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:35,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059852948] [2021-11-13 02:37:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:35,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:35,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:35,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059852948] [2021-11-13 02:37:35,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059852948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:35,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:35,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:35,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004387702] [2021-11-13 02:37:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:35,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:35,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:35,186 INFO L87 Difference]: Start difference. First operand 5294 states and 15932 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:35,749 INFO L93 Difference]: Finished difference Result 6057 states and 17777 transitions. [2021-11-13 02:37:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:35,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:35,764 INFO L225 Difference]: With dead ends: 6057 [2021-11-13 02:37:35,764 INFO L226 Difference]: Without dead ends: 5836 [2021-11-13 02:37:35,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:37:35,765 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 172 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 356.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 445.67ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:35,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 14 Invalid, 933 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [4 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 445.67ms Time] [2021-11-13 02:37:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2021-11-13 02:37:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5238. [2021-11-13 02:37:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5237 states have (on average 3.0001909490166128) internal successors, (15712), 5237 states have internal predecessors, (15712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 15712 transitions. [2021-11-13 02:37:35,915 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 15712 transitions. Word has length 43 [2021-11-13 02:37:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 5238 states and 15712 transitions. [2021-11-13 02:37:35,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 15712 transitions. [2021-11-13 02:37:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:35,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:35,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:35,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 02:37:35,926 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2028285206, now seen corresponding path program 14 times [2021-11-13 02:37:35,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:35,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551832867] [2021-11-13 02:37:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:35,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:36,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:36,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551832867] [2021-11-13 02:37:36,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551832867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:36,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:36,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:36,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831004825] [2021-11-13 02:37:36,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:36,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:36,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:36,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:36,119 INFO L87 Difference]: Start difference. First operand 5238 states and 15712 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:36,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:36,907 INFO L93 Difference]: Finished difference Result 10478 states and 31519 transitions. [2021-11-13 02:37:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:37:36,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:36,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:36,937 INFO L225 Difference]: With dead ends: 10478 [2021-11-13 02:37:36,937 INFO L226 Difference]: Without dead ends: 10406 [2021-11-13 02:37:36,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:37:36,939 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 187 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 531.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 627.83ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:36,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 216 Invalid, 1054 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [68 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 627.83ms Time] [2021-11-13 02:37:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2021-11-13 02:37:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 6562. [2021-11-13 02:37:37,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6562 states, 6561 states have (on average 2.99481786313062) internal successors, (19649), 6561 states have internal predecessors, (19649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 19649 transitions. [2021-11-13 02:37:37,237 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 19649 transitions. Word has length 43 [2021-11-13 02:37:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:37,238 INFO L470 AbstractCegarLoop]: Abstraction has 6562 states and 19649 transitions. [2021-11-13 02:37:37,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:37,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 19649 transitions. [2021-11-13 02:37:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:37,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:37,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:37,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 02:37:37,255 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2071784584, now seen corresponding path program 15 times [2021-11-13 02:37:37,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:37,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125223357] [2021-11-13 02:37:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:37,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:37,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:37,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125223357] [2021-11-13 02:37:37,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125223357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:37,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:37,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:37:37,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886064208] [2021-11-13 02:37:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:37,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:37:37,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:37:37,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:37:37,469 INFO L87 Difference]: Start difference. First operand 6562 states and 19649 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:37,825 INFO L93 Difference]: Finished difference Result 7638 states and 22752 transitions. [2021-11-13 02:37:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:37:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:37,851 INFO L225 Difference]: With dead ends: 7638 [2021-11-13 02:37:37,852 INFO L226 Difference]: Without dead ends: 7302 [2021-11-13 02:37:37,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:37,856 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 86 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 253.81ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:37,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 50 Invalid, 332 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [25 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 253.81ms Time] [2021-11-13 02:37:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2021-11-13 02:37:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 7144. [2021-11-13 02:37:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7144 states, 7143 states have (on average 2.999720005599888) internal successors, (21427), 7143 states have internal predecessors, (21427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 21427 transitions. [2021-11-13 02:37:38,085 INFO L78 Accepts]: Start accepts. Automaton has 7144 states and 21427 transitions. Word has length 43 [2021-11-13 02:37:38,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:38,085 INFO L470 AbstractCegarLoop]: Abstraction has 7144 states and 21427 transitions. [2021-11-13 02:37:38,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:38,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7144 states and 21427 transitions. [2021-11-13 02:37:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:38,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:38,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:38,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 02:37:38,099 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:38,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:38,100 INFO L85 PathProgramCache]: Analyzing trace with hash -868389644, now seen corresponding path program 16 times [2021-11-13 02:37:38,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:38,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731102160] [2021-11-13 02:37:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:38,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:38,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:38,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731102160] [2021-11-13 02:37:38,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731102160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:38,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:38,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:38,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052921433] [2021-11-13 02:37:38,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:38,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:38,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:38,276 INFO L87 Difference]: Start difference. First operand 7144 states and 21427 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:38,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:38,923 INFO L93 Difference]: Finished difference Result 8211 states and 24079 transitions. [2021-11-13 02:37:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:38,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:38,945 INFO L225 Difference]: With dead ends: 8211 [2021-11-13 02:37:38,945 INFO L226 Difference]: Without dead ends: 7844 [2021-11-13 02:37:38,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:37:38,946 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 208 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 412.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 494.08ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:38,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 13 Invalid, 878 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [5 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 494.08ms Time] [2021-11-13 02:37:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2021-11-13 02:37:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 7076. [2021-11-13 02:37:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7076 states, 7075 states have (on average 2.9898233215547703) internal successors, (21153), 7075 states have internal predecessors, (21153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7076 states to 7076 states and 21153 transitions. [2021-11-13 02:37:39,162 INFO L78 Accepts]: Start accepts. Automaton has 7076 states and 21153 transitions. Word has length 43 [2021-11-13 02:37:39,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:39,163 INFO L470 AbstractCegarLoop]: Abstraction has 7076 states and 21153 transitions. [2021-11-13 02:37:39,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:39,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7076 states and 21153 transitions. [2021-11-13 02:37:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:39,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:39,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:39,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 02:37:39,176 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1923406406, now seen corresponding path program 17 times [2021-11-13 02:37:39,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:39,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210941262] [2021-11-13 02:37:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:39,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:39,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:39,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210941262] [2021-11-13 02:37:39,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210941262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:39,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:39,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:37:39,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440082596] [2021-11-13 02:37:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:39,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:37:39,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:37:39,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:37:39,404 INFO L87 Difference]: Start difference. First operand 7076 states and 21153 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:39,723 INFO L93 Difference]: Finished difference Result 7656 states and 22734 transitions. [2021-11-13 02:37:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:37:39,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:39,746 INFO L225 Difference]: With dead ends: 7656 [2021-11-13 02:37:39,747 INFO L226 Difference]: Without dead ends: 7510 [2021-11-13 02:37:39,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:37:39,755 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 55 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 275.18ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:39,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 54 Invalid, 315 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [11 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 275.18ms Time] [2021-11-13 02:37:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7510 states. [2021-11-13 02:37:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7510 to 7186. [2021-11-13 02:37:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7186 states, 7185 states have (on average 2.9832985386221296) internal successors, (21435), 7185 states have internal predecessors, (21435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7186 states to 7186 states and 21435 transitions. [2021-11-13 02:37:39,936 INFO L78 Accepts]: Start accepts. Automaton has 7186 states and 21435 transitions. Word has length 43 [2021-11-13 02:37:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:39,936 INFO L470 AbstractCegarLoop]: Abstraction has 7186 states and 21435 transitions. [2021-11-13 02:37:39,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7186 states and 21435 transitions. [2021-11-13 02:37:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:39,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:39,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:39,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 02:37:39,951 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1627941446, now seen corresponding path program 18 times [2021-11-13 02:37:39,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:39,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742678703] [2021-11-13 02:37:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:39,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:40,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:40,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742678703] [2021-11-13 02:37:40,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742678703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:40,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:40,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:40,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771457733] [2021-11-13 02:37:40,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:40,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:40,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:40,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:40,118 INFO L87 Difference]: Start difference. First operand 7186 states and 21435 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:40,767 INFO L93 Difference]: Finished difference Result 9616 states and 28052 transitions. [2021-11-13 02:37:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:37:40,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:40,795 INFO L225 Difference]: With dead ends: 9616 [2021-11-13 02:37:40,795 INFO L226 Difference]: Without dead ends: 9616 [2021-11-13 02:37:40,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:37:40,796 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 243 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 400.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 478.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:40,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 120 Invalid, 653 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [57 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 478.51ms Time] [2021-11-13 02:37:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9616 states. [2021-11-13 02:37:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9616 to 7836. [2021-11-13 02:37:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7835 states have (on average 2.966305041480536) internal successors, (23241), 7835 states have internal predecessors, (23241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 23241 transitions. [2021-11-13 02:37:41,005 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 23241 transitions. Word has length 43 [2021-11-13 02:37:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:41,006 INFO L470 AbstractCegarLoop]: Abstraction has 7836 states and 23241 transitions. [2021-11-13 02:37:41,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 23241 transitions. [2021-11-13 02:37:41,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:41,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:41,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:41,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 02:37:41,026 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1344094068, now seen corresponding path program 19 times [2021-11-13 02:37:41,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:41,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132040581] [2021-11-13 02:37:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:41,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:41,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:41,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132040581] [2021-11-13 02:37:41,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132040581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:41,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:41,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:37:41,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171484381] [2021-11-13 02:37:41,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:41,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:37:41,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:41,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:37:41,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:37:41,290 INFO L87 Difference]: Start difference. First operand 7836 states and 23241 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:41,504 INFO L93 Difference]: Finished difference Result 7522 states and 22091 transitions. [2021-11-13 02:37:41,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:37:41,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:41,523 INFO L225 Difference]: With dead ends: 7522 [2021-11-13 02:37:41,523 INFO L226 Difference]: Without dead ends: 7318 [2021-11-13 02:37:41,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:37:41,524 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171.93ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:41,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 36 Invalid, 227 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [12 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 171.93ms Time] [2021-11-13 02:37:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2021-11-13 02:37:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 6990. [2021-11-13 02:37:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6989 states have (on average 2.957361568178566) internal successors, (20669), 6989 states have internal predecessors, (20669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 20669 transitions. [2021-11-13 02:37:41,692 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 20669 transitions. Word has length 43 [2021-11-13 02:37:41,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:41,692 INFO L470 AbstractCegarLoop]: Abstraction has 6990 states and 20669 transitions. [2021-11-13 02:37:41,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 20669 transitions. [2021-11-13 02:37:41,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:41,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:41,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:41,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 02:37:41,708 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:41,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:41,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1952346524, now seen corresponding path program 20 times [2021-11-13 02:37:41,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:41,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38504312] [2021-11-13 02:37:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:41,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:41,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:41,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38504312] [2021-11-13 02:37:41,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38504312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:41,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:41,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:41,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781458419] [2021-11-13 02:37:41,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:41,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:41,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:41,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:41,903 INFO L87 Difference]: Start difference. First operand 6990 states and 20669 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:42,279 INFO L93 Difference]: Finished difference Result 10270 states and 30552 transitions. [2021-11-13 02:37:42,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:37:42,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:42,300 INFO L225 Difference]: With dead ends: 10270 [2021-11-13 02:37:42,300 INFO L226 Difference]: Without dead ends: 9262 [2021-11-13 02:37:42,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:42,301 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 99 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 230.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.86ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:42,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 66 Invalid, 413 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [34 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 274.86ms Time] [2021-11-13 02:37:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2021-11-13 02:37:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 7274. [2021-11-13 02:37:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7273 states have (on average 2.959439021036711) internal successors, (21524), 7273 states have internal predecessors, (21524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 21524 transitions. [2021-11-13 02:37:42,467 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 21524 transitions. Word has length 43 [2021-11-13 02:37:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:42,468 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 21524 transitions. [2021-11-13 02:37:42,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 21524 transitions. [2021-11-13 02:37:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:42,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:42,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:42,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 02:37:42,479 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 948698318, now seen corresponding path program 21 times [2021-11-13 02:37:42,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:42,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593330186] [2021-11-13 02:37:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:42,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:42,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:42,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593330186] [2021-11-13 02:37:42,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593330186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:42,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:42,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:42,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346349227] [2021-11-13 02:37:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:42,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:42,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:42,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:42,714 INFO L87 Difference]: Start difference. First operand 7274 states and 21524 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:43,121 INFO L93 Difference]: Finished difference Result 8848 states and 25777 transitions. [2021-11-13 02:37:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:37:43,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:43,136 INFO L225 Difference]: With dead ends: 8848 [2021-11-13 02:37:43,137 INFO L226 Difference]: Without dead ends: 8624 [2021-11-13 02:37:43,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:37:43,139 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 113 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 306.82ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:43,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 82 Invalid, 478 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [38 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 306.82ms Time] [2021-11-13 02:37:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2021-11-13 02:37:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 7148. [2021-11-13 02:37:43,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7148 states, 7147 states have (on average 2.955645725479222) internal successors, (21124), 7147 states have internal predecessors, (21124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7148 states to 7148 states and 21124 transitions. [2021-11-13 02:37:43,276 INFO L78 Accepts]: Start accepts. Automaton has 7148 states and 21124 transitions. Word has length 43 [2021-11-13 02:37:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:43,277 INFO L470 AbstractCegarLoop]: Abstraction has 7148 states and 21124 transitions. [2021-11-13 02:37:43,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 7148 states and 21124 transitions. [2021-11-13 02:37:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:43,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:43,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:43,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 02:37:43,290 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:43,291 INFO L85 PathProgramCache]: Analyzing trace with hash -375964436, now seen corresponding path program 22 times [2021-11-13 02:37:43,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:43,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161731818] [2021-11-13 02:37:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:43,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:43,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:43,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161731818] [2021-11-13 02:37:43,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161731818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:43,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:43,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:43,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58982892] [2021-11-13 02:37:43,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:43,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:43,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:43,444 INFO L87 Difference]: Start difference. First operand 7148 states and 21124 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:43,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:43,926 INFO L93 Difference]: Finished difference Result 8137 states and 23574 transitions. [2021-11-13 02:37:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:43,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:43,940 INFO L225 Difference]: With dead ends: 8137 [2021-11-13 02:37:43,941 INFO L226 Difference]: Without dead ends: 7582 [2021-11-13 02:37:43,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:37:43,942 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 192 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 306.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.21ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 373.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:43,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 14 Invalid, 870 Unknown, 0 Unchecked, 4.21ms Time], IncrementalHoareTripleChecker [4 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 373.29ms Time] [2021-11-13 02:37:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2021-11-13 02:37:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 6846. [2021-11-13 02:37:44,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6846 states, 6845 states have (on average 2.9536888239590944) internal successors, (20218), 6845 states have internal predecessors, (20218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 20218 transitions. [2021-11-13 02:37:44,078 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 20218 transitions. Word has length 43 [2021-11-13 02:37:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:44,078 INFO L470 AbstractCegarLoop]: Abstraction has 6846 states and 20218 transitions. [2021-11-13 02:37:44,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 20218 transitions. [2021-11-13 02:37:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:44,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:44,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:44,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 02:37:44,091 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 333265244, now seen corresponding path program 23 times [2021-11-13 02:37:44,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:44,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057044784] [2021-11-13 02:37:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:44,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:44,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:44,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057044784] [2021-11-13 02:37:44,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057044784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:44,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:44,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:44,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209214334] [2021-11-13 02:37:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:44,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:44,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:44,260 INFO L87 Difference]: Start difference. First operand 6846 states and 20218 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:44,629 INFO L93 Difference]: Finished difference Result 12386 states and 37041 transitions. [2021-11-13 02:37:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:44,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:44,653 INFO L225 Difference]: With dead ends: 12386 [2021-11-13 02:37:44,653 INFO L226 Difference]: Without dead ends: 12282 [2021-11-13 02:37:44,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:44,654 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 146 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 290.97ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:44,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 98 Invalid, 512 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [44 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 290.97ms Time] [2021-11-13 02:37:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-11-13 02:37:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 7370. [2021-11-13 02:37:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7370 states, 7369 states have (on average 2.963631428959153) internal successors, (21839), 7369 states have internal predecessors, (21839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 21839 transitions. [2021-11-13 02:37:44,896 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 21839 transitions. Word has length 43 [2021-11-13 02:37:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:44,896 INFO L470 AbstractCegarLoop]: Abstraction has 7370 states and 21839 transitions. [2021-11-13 02:37:44,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 21839 transitions. [2021-11-13 02:37:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:44,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:44,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:44,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 02:37:44,907 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash -302921944, now seen corresponding path program 24 times [2021-11-13 02:37:44,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:44,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523112415] [2021-11-13 02:37:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:44,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:45,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:45,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523112415] [2021-11-13 02:37:45,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523112415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:45,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:45,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:37:45,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393455134] [2021-11-13 02:37:45,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:45,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:37:45,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:37:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:37:45,109 INFO L87 Difference]: Start difference. First operand 7370 states and 21839 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:45,417 INFO L93 Difference]: Finished difference Result 8442 states and 24814 transitions. [2021-11-13 02:37:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:37:45,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:45,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:45,431 INFO L225 Difference]: With dead ends: 8442 [2021-11-13 02:37:45,431 INFO L226 Difference]: Without dead ends: 8158 [2021-11-13 02:37:45,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:45,432 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 81 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.53ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:45,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 56 Invalid, 363 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [27 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 237.53ms Time] [2021-11-13 02:37:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2021-11-13 02:37:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 7092. [2021-11-13 02:37:45,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7092 states, 7091 states have (on average 2.960795374418277) internal successors, (20995), 7091 states have internal predecessors, (20995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7092 states to 7092 states and 20995 transitions. [2021-11-13 02:37:45,547 INFO L78 Accepts]: Start accepts. Automaton has 7092 states and 20995 transitions. Word has length 43 [2021-11-13 02:37:45,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:45,547 INFO L470 AbstractCegarLoop]: Abstraction has 7092 states and 20995 transitions. [2021-11-13 02:37:45,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:45,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7092 states and 20995 transitions. [2021-11-13 02:37:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:45,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:45,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:45,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 02:37:45,557 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1822360024, now seen corresponding path program 25 times [2021-11-13 02:37:45,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:45,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382810277] [2021-11-13 02:37:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:45,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:45,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:45,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382810277] [2021-11-13 02:37:45,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382810277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:45,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:45,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:45,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061489393] [2021-11-13 02:37:45,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:45,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:45,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:45,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:45,745 INFO L87 Difference]: Start difference. First operand 7092 states and 20995 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:46,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:46,089 INFO L93 Difference]: Finished difference Result 9316 states and 27713 transitions. [2021-11-13 02:37:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:37:46,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:46,115 INFO L225 Difference]: With dead ends: 9316 [2021-11-13 02:37:46,115 INFO L226 Difference]: Without dead ends: 8550 [2021-11-13 02:37:46,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:46,116 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 223.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 266.83ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:46,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 70 Invalid, 393 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [26 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 266.83ms Time] [2021-11-13 02:37:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8550 states. [2021-11-13 02:37:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8550 to 7562. [2021-11-13 02:37:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7562 states, 7561 states have (on average 2.9681259092712606) internal successors, (22442), 7561 states have internal predecessors, (22442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7562 states to 7562 states and 22442 transitions. [2021-11-13 02:37:46,255 INFO L78 Accepts]: Start accepts. Automaton has 7562 states and 22442 transitions. Word has length 43 [2021-11-13 02:37:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:46,256 INFO L470 AbstractCegarLoop]: Abstraction has 7562 states and 22442 transitions. [2021-11-13 02:37:46,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 7562 states and 22442 transitions. [2021-11-13 02:37:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:46,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:46,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:46,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 02:37:46,267 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2049705926, now seen corresponding path program 26 times [2021-11-13 02:37:46,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:46,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698617270] [2021-11-13 02:37:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:46,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:46,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:46,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698617270] [2021-11-13 02:37:46,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698617270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:46,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:46,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:46,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715580736] [2021-11-13 02:37:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:46,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:46,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:46,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:46,472 INFO L87 Difference]: Start difference. First operand 7562 states and 22442 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:46,998 INFO L93 Difference]: Finished difference Result 8560 states and 25131 transitions. [2021-11-13 02:37:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:37:46,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:46,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:47,019 INFO L225 Difference]: With dead ends: 8560 [2021-11-13 02:37:47,019 INFO L226 Difference]: Without dead ends: 8418 [2021-11-13 02:37:47,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:37:47,020 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 94 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.32ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 410.11ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:47,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 116 Invalid, 635 Unknown, 0 Unchecked, 2.32ms Time], IncrementalHoareTripleChecker [29 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 410.11ms Time] [2021-11-13 02:37:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2021-11-13 02:37:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 7964. [2021-11-13 02:37:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7964 states, 7963 states have (on average 2.9429863116915733) internal successors, (23435), 7963 states have internal predecessors, (23435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 23435 transitions. [2021-11-13 02:37:47,219 INFO L78 Accepts]: Start accepts. Automaton has 7964 states and 23435 transitions. Word has length 43 [2021-11-13 02:37:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:47,220 INFO L470 AbstractCegarLoop]: Abstraction has 7964 states and 23435 transitions. [2021-11-13 02:37:47,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7964 states and 23435 transitions. [2021-11-13 02:37:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:47,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:47,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:47,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-13 02:37:47,239 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:47,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:47,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1541314406, now seen corresponding path program 27 times [2021-11-13 02:37:47,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:47,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327538399] [2021-11-13 02:37:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:47,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:47,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:47,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327538399] [2021-11-13 02:37:47,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327538399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:47,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:47,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:47,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234877708] [2021-11-13 02:37:47,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:47,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:47,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:47,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:47,395 INFO L87 Difference]: Start difference. First operand 7964 states and 23435 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:48,037 INFO L93 Difference]: Finished difference Result 8687 states and 25178 transitions. [2021-11-13 02:37:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:48,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:48,060 INFO L225 Difference]: With dead ends: 8687 [2021-11-13 02:37:48,061 INFO L226 Difference]: Without dead ends: 8306 [2021-11-13 02:37:48,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:37:48,062 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 194 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 411.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.71ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 494.74ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:48,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 15 Invalid, 905 Unknown, 0 Unchecked, 3.71ms Time], IncrementalHoareTripleChecker [4 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 494.74ms Time] [2021-11-13 02:37:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8306 states. [2021-11-13 02:37:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8306 to 7834. [2021-11-13 02:37:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 7833 states have (on average 2.937061151538363) internal successors, (23006), 7833 states have internal predecessors, (23006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 23006 transitions. [2021-11-13 02:37:48,313 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 23006 transitions. Word has length 43 [2021-11-13 02:37:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:48,314 INFO L470 AbstractCegarLoop]: Abstraction has 7834 states and 23006 transitions. [2021-11-13 02:37:48,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 23006 transitions. [2021-11-13 02:37:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:48,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:48,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:48,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 02:37:48,325 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:48,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:48,325 INFO L85 PathProgramCache]: Analyzing trace with hash -482701004, now seen corresponding path program 28 times [2021-11-13 02:37:48,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:48,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373516932] [2021-11-13 02:37:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:48,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:48,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:48,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373516932] [2021-11-13 02:37:48,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373516932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:48,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:48,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:37:48,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610184211] [2021-11-13 02:37:48,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:48,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:37:48,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:37:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:37:48,467 INFO L87 Difference]: Start difference. First operand 7834 states and 23006 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:48,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:48,784 INFO L93 Difference]: Finished difference Result 10000 states and 28537 transitions. [2021-11-13 02:37:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:37:48,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:48,809 INFO L225 Difference]: With dead ends: 10000 [2021-11-13 02:37:48,809 INFO L226 Difference]: Without dead ends: 9756 [2021-11-13 02:37:48,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:48,811 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 97 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.30ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:48,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 62 Invalid, 336 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [34 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 251.30ms Time] [2021-11-13 02:37:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9756 states. [2021-11-13 02:37:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9756 to 7126. [2021-11-13 02:37:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7126 states, 7125 states have (on average 2.911017543859649) internal successors, (20741), 7125 states have internal predecessors, (20741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7126 states to 7126 states and 20741 transitions. [2021-11-13 02:37:49,026 INFO L78 Accepts]: Start accepts. Automaton has 7126 states and 20741 transitions. Word has length 43 [2021-11-13 02:37:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:49,026 INFO L470 AbstractCegarLoop]: Abstraction has 7126 states and 20741 transitions. [2021-11-13 02:37:49,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7126 states and 20741 transitions. [2021-11-13 02:37:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:49,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:49,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:49,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 02:37:49,042 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:49,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1008469772, now seen corresponding path program 29 times [2021-11-13 02:37:49,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:49,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173364532] [2021-11-13 02:37:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:49,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:49,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:49,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173364532] [2021-11-13 02:37:49,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173364532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:49,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:49,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:49,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390995795] [2021-11-13 02:37:49,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:49,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:49,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:49,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:49,224 INFO L87 Difference]: Start difference. First operand 7126 states and 20741 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:49,583 INFO L93 Difference]: Finished difference Result 8096 states and 23341 transitions. [2021-11-13 02:37:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:49,597 INFO L225 Difference]: With dead ends: 8096 [2021-11-13 02:37:49,597 INFO L226 Difference]: Without dead ends: 8028 [2021-11-13 02:37:49,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:49,598 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 99 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 280.24ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:49,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 68 Invalid, 375 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [49 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 280.24ms Time] [2021-11-13 02:37:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2021-11-13 02:37:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 6670. [2021-11-13 02:37:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6670 states, 6669 states have (on average 2.898935372619583) internal successors, (19333), 6669 states have internal predecessors, (19333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6670 states to 6670 states and 19333 transitions. [2021-11-13 02:37:49,719 INFO L78 Accepts]: Start accepts. Automaton has 6670 states and 19333 transitions. Word has length 43 [2021-11-13 02:37:49,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:49,719 INFO L470 AbstractCegarLoop]: Abstraction has 6670 states and 19333 transitions. [2021-11-13 02:37:49,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 6670 states and 19333 transitions. [2021-11-13 02:37:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:49,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:49,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:49,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-13 02:37:49,730 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:49,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:49,730 INFO L85 PathProgramCache]: Analyzing trace with hash 468834788, now seen corresponding path program 30 times [2021-11-13 02:37:49,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:49,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307531667] [2021-11-13 02:37:49,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:49,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:49,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:49,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307531667] [2021-11-13 02:37:49,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307531667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:49,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:49,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:49,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840509307] [2021-11-13 02:37:49,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:49,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:49,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:49,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:49,926 INFO L87 Difference]: Start difference. First operand 6670 states and 19333 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:50,420 INFO L93 Difference]: Finished difference Result 7472 states and 21430 transitions. [2021-11-13 02:37:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:50,433 INFO L225 Difference]: With dead ends: 7472 [2021-11-13 02:37:50,433 INFO L226 Difference]: Without dead ends: 6914 [2021-11-13 02:37:50,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:37:50,434 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 336.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.48ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 400.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:50,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 105 Invalid, 645 Unknown, 0 Unchecked, 2.48ms Time], IncrementalHoareTripleChecker [32 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 400.00ms Time] [2021-11-13 02:37:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6914 states. [2021-11-13 02:37:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6914 to 6192. [2021-11-13 02:37:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 6191 states have (on average 2.8945243094815054) internal successors, (17920), 6191 states have internal predecessors, (17920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 17920 transitions. [2021-11-13 02:37:50,547 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 17920 transitions. Word has length 43 [2021-11-13 02:37:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:50,547 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 17920 transitions. [2021-11-13 02:37:50,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 17920 transitions. [2021-11-13 02:37:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:50,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:50,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:50,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 02:37:50,558 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1995738878, now seen corresponding path program 31 times [2021-11-13 02:37:50,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:50,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678129266] [2021-11-13 02:37:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:50,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:50,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:50,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678129266] [2021-11-13 02:37:50,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678129266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:50,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:50,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:37:50,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105120974] [2021-11-13 02:37:50,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:50,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:37:50,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:50,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:37:50,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:37:50,617 INFO L87 Difference]: Start difference. First operand 6192 states and 17920 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:50,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:50,730 INFO L93 Difference]: Finished difference Result 6160 states and 17716 transitions. [2021-11-13 02:37:50,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:37:50,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:50,747 INFO L225 Difference]: With dead ends: 6160 [2021-11-13 02:37:50,748 INFO L226 Difference]: Without dead ends: 6160 [2021-11-13 02:37:50,748 INFO L932 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 [2021-11-13 02:37:50,749 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.10ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:50,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 16 Invalid, 90 Unknown, 0 Unchecked, 0.38ms Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 79.10ms Time] [2021-11-13 02:37:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2021-11-13 02:37:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 6148. [2021-11-13 02:37:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 2.875874410281438) internal successors, (17678), 6147 states have internal predecessors, (17678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 17678 transitions. [2021-11-13 02:37:50,888 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 17678 transitions. Word has length 43 [2021-11-13 02:37:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:50,888 INFO L470 AbstractCegarLoop]: Abstraction has 6148 states and 17678 transitions. [2021-11-13 02:37:50,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 17678 transitions. [2021-11-13 02:37:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:50,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:50,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:50,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-13 02:37:50,898 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:50,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1936413144, now seen corresponding path program 32 times [2021-11-13 02:37:50,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:50,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977772328] [2021-11-13 02:37:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:50,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:51,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:51,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977772328] [2021-11-13 02:37:51,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977772328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:51,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:51,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:37:51,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471018138] [2021-11-13 02:37:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:51,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:37:51,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:37:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:51,097 INFO L87 Difference]: Start difference. First operand 6148 states and 17678 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:51,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:51,768 INFO L93 Difference]: Finished difference Result 7442 states and 21104 transitions. [2021-11-13 02:37:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:37:51,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:51,786 INFO L225 Difference]: With dead ends: 7442 [2021-11-13 02:37:51,787 INFO L226 Difference]: Without dead ends: 6986 [2021-11-13 02:37:51,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:37:51,788 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 144 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 442.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.35ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 527.97ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:51,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 167 Invalid, 863 Unknown, 0 Unchecked, 3.35ms Time], IncrementalHoareTripleChecker [58 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 527.97ms Time] [2021-11-13 02:37:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2021-11-13 02:37:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 5686. [2021-11-13 02:37:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5685 states have (on average 2.8789797713280563) internal successors, (16367), 5685 states have internal predecessors, (16367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 16367 transitions. [2021-11-13 02:37:51,997 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 16367 transitions. Word has length 43 [2021-11-13 02:37:51,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:51,997 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 16367 transitions. [2021-11-13 02:37:51,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 16367 transitions. [2021-11-13 02:37:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:52,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:52,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:52,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-13 02:37:52,011 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:52,012 INFO L85 PathProgramCache]: Analyzing trace with hash 809690818, now seen corresponding path program 33 times [2021-11-13 02:37:52,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:52,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071148744] [2021-11-13 02:37:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:52,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:52,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:52,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071148744] [2021-11-13 02:37:52,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071148744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:52,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:52,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:52,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513856193] [2021-11-13 02:37:52,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:52,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:52,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:52,159 INFO L87 Difference]: Start difference. First operand 5686 states and 16367 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:52,666 INFO L93 Difference]: Finished difference Result 8040 states and 22636 transitions. [2021-11-13 02:37:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 02:37:52,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:52,691 INFO L225 Difference]: With dead ends: 8040 [2021-11-13 02:37:52,692 INFO L226 Difference]: Without dead ends: 7828 [2021-11-13 02:37:52,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:37:52,693 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 247 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:52,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 115 Invalid, 518 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [69 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 376.70ms Time] [2021-11-13 02:37:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2021-11-13 02:37:52,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 5754. [2021-11-13 02:37:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5754 states, 5753 states have (on average 2.876933773683296) internal successors, (16551), 5753 states have internal predecessors, (16551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 16551 transitions. [2021-11-13 02:37:52,894 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 16551 transitions. Word has length 43 [2021-11-13 02:37:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:52,894 INFO L470 AbstractCegarLoop]: Abstraction has 5754 states and 16551 transitions. [2021-11-13 02:37:52,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 16551 transitions. [2021-11-13 02:37:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:52,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:52,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:52,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-13 02:37:52,908 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:52,909 INFO L85 PathProgramCache]: Analyzing trace with hash -465378538, now seen corresponding path program 34 times [2021-11-13 02:37:52,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:52,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576622922] [2021-11-13 02:37:52,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:52,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:53,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:53,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576622922] [2021-11-13 02:37:53,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576622922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:53,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:53,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:53,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654699625] [2021-11-13 02:37:53,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:53,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:53,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:53,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:53,052 INFO L87 Difference]: Start difference. First operand 5754 states and 16551 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:53,614 INFO L93 Difference]: Finished difference Result 8598 states and 23829 transitions. [2021-11-13 02:37:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:37:53,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:53,636 INFO L225 Difference]: With dead ends: 8598 [2021-11-13 02:37:53,636 INFO L226 Difference]: Without dead ends: 8104 [2021-11-13 02:37:53,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:37:53,637 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 380 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 321.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 386.70ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:53,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 105 Invalid, 604 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [131 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 386.70ms Time] [2021-11-13 02:37:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2021-11-13 02:37:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 5702. [2021-11-13 02:37:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5701 states have (on average 2.873355551657604) internal successors, (16381), 5701 states have internal predecessors, (16381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 16381 transitions. [2021-11-13 02:37:53,773 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 16381 transitions. Word has length 43 [2021-11-13 02:37:53,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:53,774 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 16381 transitions. [2021-11-13 02:37:53,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 16381 transitions. [2021-11-13 02:37:53,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:53,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:53,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:53,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-13 02:37:53,787 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1720154994, now seen corresponding path program 35 times [2021-11-13 02:37:53,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:53,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789104691] [2021-11-13 02:37:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:53,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:54,016 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:54,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789104691] [2021-11-13 02:37:54,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789104691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:54,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:54,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:37:54,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106578621] [2021-11-13 02:37:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:54,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:37:54,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:54,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:37:54,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:54,018 INFO L87 Difference]: Start difference. First operand 5702 states and 16381 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:54,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:54,484 INFO L93 Difference]: Finished difference Result 6234 states and 17749 transitions. [2021-11-13 02:37:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:37:54,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:54,497 INFO L225 Difference]: With dead ends: 6234 [2021-11-13 02:37:54,497 INFO L226 Difference]: Without dead ends: 6058 [2021-11-13 02:37:54,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:37:54,498 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 134 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 363.38ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:54,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 130 Invalid, 653 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [44 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 363.38ms Time] [2021-11-13 02:37:54,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6058 states. [2021-11-13 02:37:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6058 to 5694. [2021-11-13 02:37:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5693 states have (on average 2.872826277885122) internal successors, (16355), 5693 states have internal predecessors, (16355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 16355 transitions. [2021-11-13 02:37:54,618 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 16355 transitions. Word has length 43 [2021-11-13 02:37:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:54,618 INFO L470 AbstractCegarLoop]: Abstraction has 5694 states and 16355 transitions. [2021-11-13 02:37:54,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 16355 transitions. [2021-11-13 02:37:54,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:54,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:54,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:54,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-13 02:37:54,629 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:54,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash -347398032, now seen corresponding path program 36 times [2021-11-13 02:37:54,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:54,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250494503] [2021-11-13 02:37:54,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:54,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:54,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:54,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250494503] [2021-11-13 02:37:54,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250494503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:54,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:54,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:37:54,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923910285] [2021-11-13 02:37:54,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:54,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:37:54,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:37:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:54,824 INFO L87 Difference]: Start difference. First operand 5694 states and 16355 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:55,277 INFO L93 Difference]: Finished difference Result 6252 states and 17704 transitions. [2021-11-13 02:37:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:37:55,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:55,287 INFO L225 Difference]: With dead ends: 6252 [2021-11-13 02:37:55,287 INFO L226 Difference]: Without dead ends: 5906 [2021-11-13 02:37:55,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:37:55,288 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 303.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 362.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:55,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 118 Invalid, 554 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [42 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 362.00ms Time] [2021-11-13 02:37:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2021-11-13 02:37:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 5110. [2021-11-13 02:37:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5109 states have (on average 2.855940497161871) internal successors, (14591), 5109 states have internal predecessors, (14591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 14591 transitions. [2021-11-13 02:37:55,394 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 14591 transitions. Word has length 43 [2021-11-13 02:37:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:55,394 INFO L470 AbstractCegarLoop]: Abstraction has 5110 states and 14591 transitions. [2021-11-13 02:37:55,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 14591 transitions. [2021-11-13 02:37:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:55,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:55,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:55,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-13 02:37:55,401 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1573376642, now seen corresponding path program 37 times [2021-11-13 02:37:55,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:55,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132979847] [2021-11-13 02:37:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:55,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:55,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:55,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132979847] [2021-11-13 02:37:55,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132979847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:55,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:55,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:37:55,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240311852] [2021-11-13 02:37:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:55,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:37:55,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:37:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:37:55,572 INFO L87 Difference]: Start difference. First operand 5110 states and 14591 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:55,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:55,838 INFO L93 Difference]: Finished difference Result 4770 states and 13217 transitions. [2021-11-13 02:37:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:55,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:55,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:55,846 INFO L225 Difference]: With dead ends: 4770 [2021-11-13 02:37:55,846 INFO L226 Difference]: Without dead ends: 4420 [2021-11-13 02:37:55,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:55,847 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 92 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 222.47ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:55,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 84 Invalid, 466 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [25 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 222.47ms Time] [2021-11-13 02:37:55,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2021-11-13 02:37:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3538. [2021-11-13 02:37:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 2.734803505795872) internal successors, (9673), 3537 states have internal predecessors, (9673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 9673 transitions. [2021-11-13 02:37:55,904 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 9673 transitions. Word has length 43 [2021-11-13 02:37:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 3538 states and 9673 transitions. [2021-11-13 02:37:55,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 9673 transitions. [2021-11-13 02:37:55,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:55,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:55,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:55,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-13 02:37:55,909 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1325983614, now seen corresponding path program 38 times [2021-11-13 02:37:55,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:55,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723091970] [2021-11-13 02:37:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:55,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:56,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:56,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723091970] [2021-11-13 02:37:56,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723091970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:56,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:56,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:37:56,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137143151] [2021-11-13 02:37:56,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:56,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:37:56,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:56,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:37:56,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:56,086 INFO L87 Difference]: Start difference. First operand 3538 states and 9673 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:56,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:56,442 INFO L93 Difference]: Finished difference Result 4258 states and 11699 transitions. [2021-11-13 02:37:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 02:37:56,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:56,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:56,451 INFO L225 Difference]: With dead ends: 4258 [2021-11-13 02:37:56,451 INFO L226 Difference]: Without dead ends: 4090 [2021-11-13 02:37:56,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:37:56,452 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 133 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 244.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.87ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:56,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 80 Invalid, 485 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [33 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 291.87ms Time] [2021-11-13 02:37:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-11-13 02:37:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 3498. [2021-11-13 02:37:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 2.7369173577352015) internal successors, (9571), 3497 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 9571 transitions. [2021-11-13 02:37:56,539 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 9571 transitions. Word has length 43 [2021-11-13 02:37:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:56,539 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 9571 transitions. [2021-11-13 02:37:56,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 9571 transitions. [2021-11-13 02:37:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:56,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:56,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:56,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-13 02:37:56,548 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:56,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1537918234, now seen corresponding path program 39 times [2021-11-13 02:37:56,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:56,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918486755] [2021-11-13 02:37:56,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:56,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:56,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:56,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918486755] [2021-11-13 02:37:56,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918486755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:56,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:56,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:56,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168967580] [2021-11-13 02:37:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:56,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:56,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:56,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:56,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:56,735 INFO L87 Difference]: Start difference. First operand 3498 states and 9571 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:57,281 INFO L93 Difference]: Finished difference Result 4626 states and 12517 transitions. [2021-11-13 02:37:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:37:57,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:57,287 INFO L225 Difference]: With dead ends: 4626 [2021-11-13 02:37:57,287 INFO L226 Difference]: Without dead ends: 4200 [2021-11-13 02:37:57,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:37:57,288 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 172 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 323.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 391.20ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:57,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 155 Invalid, 748 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [59 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 391.20ms Time] [2021-11-13 02:37:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2021-11-13 02:37:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 3796. [2021-11-13 02:37:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 3795 states have (on average 2.7341238471673255) internal successors, (10376), 3795 states have internal predecessors, (10376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 10376 transitions. [2021-11-13 02:37:57,377 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 10376 transitions. Word has length 43 [2021-11-13 02:37:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:57,377 INFO L470 AbstractCegarLoop]: Abstraction has 3796 states and 10376 transitions. [2021-11-13 02:37:57,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 10376 transitions. [2021-11-13 02:37:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:57,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:57,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:57,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-13 02:37:57,385 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:57,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1056428776, now seen corresponding path program 40 times [2021-11-13 02:37:57,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:57,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144270044] [2021-11-13 02:37:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:57,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:57,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:57,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144270044] [2021-11-13 02:37:57,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144270044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:57,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:57,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:57,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798635968] [2021-11-13 02:37:57,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:57,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:57,505 INFO L87 Difference]: Start difference. First operand 3796 states and 10376 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:57,877 INFO L93 Difference]: Finished difference Result 4658 states and 12477 transitions. [2021-11-13 02:37:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:37:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:57,885 INFO L225 Difference]: With dead ends: 4658 [2021-11-13 02:37:57,885 INFO L226 Difference]: Without dead ends: 4310 [2021-11-13 02:37:57,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:37:57,885 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 230 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 234.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 282.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:57,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 84 Invalid, 477 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [64 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 282.89ms Time] [2021-11-13 02:37:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2021-11-13 02:37:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 3688. [2021-11-13 02:37:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 2.732031461893138) internal successors, (10073), 3687 states have internal predecessors, (10073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 10073 transitions. [2021-11-13 02:37:57,946 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 10073 transitions. Word has length 43 [2021-11-13 02:37:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:57,947 INFO L470 AbstractCegarLoop]: Abstraction has 3688 states and 10073 transitions. [2021-11-13 02:37:57,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 10073 transitions. [2021-11-13 02:37:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:57,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:57,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:57,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-13 02:37:57,953 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash 488355084, now seen corresponding path program 41 times [2021-11-13 02:37:57,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:57,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699066944] [2021-11-13 02:37:57,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:57,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:58,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:58,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699066944] [2021-11-13 02:37:58,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699066944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:58,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:58,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:58,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709283526] [2021-11-13 02:37:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:58,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:58,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:58,133 INFO L87 Difference]: Start difference. First operand 3688 states and 10073 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:58,529 INFO L93 Difference]: Finished difference Result 4104 states and 11103 transitions. [2021-11-13 02:37:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:58,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:58,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:58,537 INFO L225 Difference]: With dead ends: 4104 [2021-11-13 02:37:58,537 INFO L226 Difference]: Without dead ends: 3912 [2021-11-13 02:37:58,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:37:58,538 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 125 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 259.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 309.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:58,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 84 Invalid, 474 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [27 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 309.56ms Time] [2021-11-13 02:37:58,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-11-13 02:37:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3844. [2021-11-13 02:37:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3843 states have (on average 2.7200104085349985) internal successors, (10453), 3843 states have internal predecessors, (10453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 10453 transitions. [2021-11-13 02:37:58,605 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 10453 transitions. Word has length 43 [2021-11-13 02:37:58,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:58,606 INFO L470 AbstractCegarLoop]: Abstraction has 3844 states and 10453 transitions. [2021-11-13 02:37:58,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:58,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 10453 transitions. [2021-11-13 02:37:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:58,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:58,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:58,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-13 02:37:58,612 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1089579006, now seen corresponding path program 42 times [2021-11-13 02:37:58,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:58,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209489090] [2021-11-13 02:37:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:58,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:58,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:58,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209489090] [2021-11-13 02:37:58,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209489090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:58,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:58,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:58,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066788134] [2021-11-13 02:37:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:58,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:58,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:58,786 INFO L87 Difference]: Start difference. First operand 3844 states and 10453 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:59,241 INFO L93 Difference]: Finished difference Result 4982 states and 13264 transitions. [2021-11-13 02:37:59,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:37:59,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:59,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:59,250 INFO L225 Difference]: With dead ends: 4982 [2021-11-13 02:37:59,250 INFO L226 Difference]: Without dead ends: 4742 [2021-11-13 02:37:59,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:37:59,251 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 173 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 366.59ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:59,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 117 Invalid, 721 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [53 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 366.59ms Time] [2021-11-13 02:37:59,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2021-11-13 02:37:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 3682. [2021-11-13 02:37:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 2.7307796794349364) internal successors, (10052), 3681 states have internal predecessors, (10052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 10052 transitions. [2021-11-13 02:37:59,328 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 10052 transitions. Word has length 43 [2021-11-13 02:37:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:59,329 INFO L470 AbstractCegarLoop]: Abstraction has 3682 states and 10052 transitions. [2021-11-13 02:37:59,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 10052 transitions. [2021-11-13 02:37:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:59,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:59,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:59,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-13 02:37:59,335 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:59,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash 518437562, now seen corresponding path program 43 times [2021-11-13 02:37:59,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:59,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189802908] [2021-11-13 02:37:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:59,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:37:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:37:59,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:37:59,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189802908] [2021-11-13 02:37:59,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189802908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:37:59,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:37:59,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:37:59,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082071482] [2021-11-13 02:37:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:37:59,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:37:59,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:37:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:37:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:37:59,508 INFO L87 Difference]: Start difference. First operand 3682 states and 10052 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:37:59,840 INFO L93 Difference]: Finished difference Result 3858 states and 10470 transitions. [2021-11-13 02:37:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:37:59,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:37:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:37:59,850 INFO L225 Difference]: With dead ends: 3858 [2021-11-13 02:37:59,850 INFO L226 Difference]: Without dead ends: 3666 [2021-11-13 02:37:59,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:37:59,862 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 110 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 285.02ms IncrementalHoareTripleChecker+Time [2021-11-13 02:37:59,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 84 Invalid, 436 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [19 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 285.02ms Time] [2021-11-13 02:37:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-11-13 02:37:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3634. [2021-11-13 02:37:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 2.7280484448114506) internal successors, (9911), 3633 states have internal predecessors, (9911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 9911 transitions. [2021-11-13 02:37:59,948 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 9911 transitions. Word has length 43 [2021-11-13 02:37:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:37:59,950 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 9911 transitions. [2021-11-13 02:37:59,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:37:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 9911 transitions. [2021-11-13 02:37:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:37:59,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:37:59,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:37:59,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-13 02:37:59,960 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:37:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:37:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1059496528, now seen corresponding path program 44 times [2021-11-13 02:37:59,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:37:59,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643734350] [2021-11-13 02:37:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:37:59,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:37:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:00,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:00,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643734350] [2021-11-13 02:38:00,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643734350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:00,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:00,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:00,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434465101] [2021-11-13 02:38:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:00,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:00,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:00,133 INFO L87 Difference]: Start difference. First operand 3634 states and 9911 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:00,378 INFO L93 Difference]: Finished difference Result 3982 states and 10733 transitions. [2021-11-13 02:38:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:00,385 INFO L225 Difference]: With dead ends: 3982 [2021-11-13 02:38:00,385 INFO L226 Difference]: Without dead ends: 3742 [2021-11-13 02:38:00,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:00,386 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 110 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 214.34ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:00,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 78 Invalid, 416 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [18 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 214.34ms Time] [2021-11-13 02:38:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-11-13 02:38:00,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3510. [2021-11-13 02:38:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3509 states have (on average 2.7326873753206042) internal successors, (9589), 3509 states have internal predecessors, (9589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 9589 transitions. [2021-11-13 02:38:00,450 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 9589 transitions. Word has length 43 [2021-11-13 02:38:00,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:00,450 INFO L470 AbstractCegarLoop]: Abstraction has 3510 states and 9589 transitions. [2021-11-13 02:38:00,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 9589 transitions. [2021-11-13 02:38:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:00,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:00,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:00,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-13 02:38:00,455 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:00,456 INFO L85 PathProgramCache]: Analyzing trace with hash -53209952, now seen corresponding path program 45 times [2021-11-13 02:38:00,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:00,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562834578] [2021-11-13 02:38:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:00,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:00,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:00,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562834578] [2021-11-13 02:38:00,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562834578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:00,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:00,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:00,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689057966] [2021-11-13 02:38:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:00,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:00,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:00,591 INFO L87 Difference]: Start difference. First operand 3510 states and 9589 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:00,843 INFO L93 Difference]: Finished difference Result 3838 states and 10366 transitions. [2021-11-13 02:38:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:00,852 INFO L225 Difference]: With dead ends: 3838 [2021-11-13 02:38:00,852 INFO L226 Difference]: Without dead ends: 3490 [2021-11-13 02:38:00,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:00,853 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 146 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 225.75ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:00,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 60 Invalid, 358 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [10 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 225.75ms Time] [2021-11-13 02:38:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2021-11-13 02:38:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3274. [2021-11-13 02:38:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3273 states have (on average 2.7369385884509625) internal successors, (8958), 3273 states have internal predecessors, (8958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 8958 transitions. [2021-11-13 02:38:00,927 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 8958 transitions. Word has length 43 [2021-11-13 02:38:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:00,928 INFO L470 AbstractCegarLoop]: Abstraction has 3274 states and 8958 transitions. [2021-11-13 02:38:00,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 8958 transitions. [2021-11-13 02:38:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:00,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:00,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:00,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-13 02:38:00,935 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2083009736, now seen corresponding path program 46 times [2021-11-13 02:38:00,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:00,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629804801] [2021-11-13 02:38:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:00,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:01,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:01,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629804801] [2021-11-13 02:38:01,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629804801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:01,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:01,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 02:38:01,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767262973] [2021-11-13 02:38:01,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:01,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:38:01,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:01,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:38:01,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:01,183 INFO L87 Difference]: Start difference. First operand 3274 states and 8958 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:01,609 INFO L93 Difference]: Finished difference Result 3532 states and 9582 transitions. [2021-11-13 02:38:01,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:38:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:01,614 INFO L225 Difference]: With dead ends: 3532 [2021-11-13 02:38:01,615 INFO L226 Difference]: Without dead ends: 3338 [2021-11-13 02:38:01,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:38:01,615 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 85 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 355.37ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:01,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 107 Invalid, 617 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [25 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 355.37ms Time] [2021-11-13 02:38:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2021-11-13 02:38:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3020. [2021-11-13 02:38:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3019 states have (on average 2.7734349122225903) internal successors, (8373), 3019 states have internal predecessors, (8373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 8373 transitions. [2021-11-13 02:38:01,660 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 8373 transitions. Word has length 43 [2021-11-13 02:38:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:01,660 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 8373 transitions. [2021-11-13 02:38:01,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 8373 transitions. [2021-11-13 02:38:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:01,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:01,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:01,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-13 02:38:01,664 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1280180604, now seen corresponding path program 47 times [2021-11-13 02:38:01,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:01,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528821212] [2021-11-13 02:38:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:01,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:01,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:01,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528821212] [2021-11-13 02:38:01,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528821212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:01,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:01,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:01,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312451945] [2021-11-13 02:38:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:01,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:01,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:01,768 INFO L87 Difference]: Start difference. First operand 3020 states and 8373 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:02,363 INFO L93 Difference]: Finished difference Result 4312 states and 11559 transitions. [2021-11-13 02:38:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 02:38:02,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:02,369 INFO L225 Difference]: With dead ends: 4312 [2021-11-13 02:38:02,369 INFO L226 Difference]: Without dead ends: 3444 [2021-11-13 02:38:02,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-11-13 02:38:02,371 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 285 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 344.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 414.01ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:02,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 146 Invalid, 751 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [63 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 414.01ms Time] [2021-11-13 02:38:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-11-13 02:38:02,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 2232. [2021-11-13 02:38:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2231 states have (on average 2.7055132227700582) internal successors, (6036), 2231 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 6036 transitions. [2021-11-13 02:38:02,414 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 6036 transitions. Word has length 43 [2021-11-13 02:38:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:02,414 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 6036 transitions. [2021-11-13 02:38:02,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 6036 transitions. [2021-11-13 02:38:02,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:02,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:02,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:02,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-13 02:38:02,418 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash 837921910, now seen corresponding path program 48 times [2021-11-13 02:38:02,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:02,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925025047] [2021-11-13 02:38:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:02,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:02,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:02,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925025047] [2021-11-13 02:38:02,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925025047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:02,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:02,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 02:38:02,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705634979] [2021-11-13 02:38:02,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:02,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:38:02,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:02,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:38:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:02,661 INFO L87 Difference]: Start difference. First operand 2232 states and 6036 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:03,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:03,307 INFO L93 Difference]: Finished difference Result 2466 states and 6551 transitions. [2021-11-13 02:38:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 02:38:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:03,311 INFO L225 Difference]: With dead ends: 2466 [2021-11-13 02:38:03,312 INFO L226 Difference]: Without dead ends: 2284 [2021-11-13 02:38:03,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:38:03,315 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 130 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 447.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 526.25ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:03,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 142 Invalid, 790 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [44 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 526.25ms Time] [2021-11-13 02:38:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2021-11-13 02:38:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1978. [2021-11-13 02:38:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 2.691451694486596) internal successors, (5321), 1977 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 5321 transitions. [2021-11-13 02:38:03,350 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 5321 transitions. Word has length 43 [2021-11-13 02:38:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:03,351 INFO L470 AbstractCegarLoop]: Abstraction has 1978 states and 5321 transitions. [2021-11-13 02:38:03,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 5321 transitions. [2021-11-13 02:38:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:03,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:03,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:03,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-13 02:38:03,355 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1963598542, now seen corresponding path program 49 times [2021-11-13 02:38:03,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:03,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357957871] [2021-11-13 02:38:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:03,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:03,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:03,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357957871] [2021-11-13 02:38:03,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357957871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:03,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:03,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 02:38:03,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874923494] [2021-11-13 02:38:03,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:03,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:38:03,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:38:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:38:03,585 INFO L87 Difference]: Start difference. First operand 1978 states and 5321 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:04,510 INFO L93 Difference]: Finished difference Result 2296 states and 6044 transitions. [2021-11-13 02:38:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 02:38:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:04,514 INFO L225 Difference]: With dead ends: 2296 [2021-11-13 02:38:04,514 INFO L226 Difference]: Without dead ends: 2250 [2021-11-13 02:38:04,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-11-13 02:38:04,515 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 189 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 558.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.43ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 666.51ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:04,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 210 Invalid, 1118 Unknown, 0 Unchecked, 4.43ms Time], IncrementalHoareTripleChecker [48 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 666.51ms Time] [2021-11-13 02:38:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-11-13 02:38:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1976. [2021-11-13 02:38:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 2.6855696202531645) internal successors, (5304), 1975 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 5304 transitions. [2021-11-13 02:38:04,549 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 5304 transitions. Word has length 43 [2021-11-13 02:38:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:04,549 INFO L470 AbstractCegarLoop]: Abstraction has 1976 states and 5304 transitions. [2021-11-13 02:38:04,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 5304 transitions. [2021-11-13 02:38:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:04,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:04,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:04,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-13 02:38:04,552 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:04,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1754223540, now seen corresponding path program 50 times [2021-11-13 02:38:04,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:04,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145320864] [2021-11-13 02:38:04,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:04,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:04,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:04,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145320864] [2021-11-13 02:38:04,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145320864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:04,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:04,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:04,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225719209] [2021-11-13 02:38:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:04,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:04,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:04,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:04,776 INFO L87 Difference]: Start difference. First operand 1976 states and 5304 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:05,119 INFO L93 Difference]: Finished difference Result 2020 states and 5390 transitions. [2021-11-13 02:38:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:05,124 INFO L225 Difference]: With dead ends: 2020 [2021-11-13 02:38:05,124 INFO L226 Difference]: Without dead ends: 1748 [2021-11-13 02:38:05,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:05,124 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 285.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:05,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 85 Invalid, 417 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [10 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 285.36ms Time] [2021-11-13 02:38:05,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2021-11-13 02:38:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2021-11-13 02:38:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 2.6571265025758444) internal successors, (4642), 1747 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:05,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 4642 transitions. [2021-11-13 02:38:05,165 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 4642 transitions. Word has length 43 [2021-11-13 02:38:05,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:05,165 INFO L470 AbstractCegarLoop]: Abstraction has 1748 states and 4642 transitions. [2021-11-13 02:38:05,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 4642 transitions. [2021-11-13 02:38:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:05,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:05,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:05,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-13 02:38:05,171 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash -771519786, now seen corresponding path program 51 times [2021-11-13 02:38:05,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:05,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587063503] [2021-11-13 02:38:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:05,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:05,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:05,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587063503] [2021-11-13 02:38:05,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587063503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:05,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:05,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:05,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432469541] [2021-11-13 02:38:05,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:05,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:05,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:05,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:05,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:05,401 INFO L87 Difference]: Start difference. First operand 1748 states and 4642 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:05,826 INFO L93 Difference]: Finished difference Result 2038 states and 5289 transitions. [2021-11-13 02:38:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:38:05,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:05,830 INFO L225 Difference]: With dead ends: 2038 [2021-11-13 02:38:05,830 INFO L226 Difference]: Without dead ends: 1838 [2021-11-13 02:38:05,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:38:05,831 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 103 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 298.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.38ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 359.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:05,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 108 Invalid, 653 Unknown, 0 Unchecked, 2.38ms Time], IncrementalHoareTripleChecker [23 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 359.48ms Time] [2021-11-13 02:38:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2021-11-13 02:38:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1650. [2021-11-13 02:38:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1649 states have (on average 2.6737416616130987) internal successors, (4409), 1649 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 4409 transitions. [2021-11-13 02:38:05,861 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 4409 transitions. Word has length 43 [2021-11-13 02:38:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:05,861 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 4409 transitions. [2021-11-13 02:38:05,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 4409 transitions. [2021-11-13 02:38:05,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:05,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:05,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:05,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-13 02:38:05,865 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:05,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash 69013150, now seen corresponding path program 52 times [2021-11-13 02:38:05,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:05,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179012058] [2021-11-13 02:38:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:05,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:06,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:06,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179012058] [2021-11-13 02:38:06,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179012058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:06,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:06,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:06,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730754052] [2021-11-13 02:38:06,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:06,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:06,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:06,056 INFO L87 Difference]: Start difference. First operand 1650 states and 4409 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:06,280 INFO L93 Difference]: Finished difference Result 1684 states and 4470 transitions. [2021-11-13 02:38:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:06,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:06,285 INFO L225 Difference]: With dead ends: 1684 [2021-11-13 02:38:06,285 INFO L226 Difference]: Without dead ends: 1628 [2021-11-13 02:38:06,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:06,286 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 209.98ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:06,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 49 Invalid, 292 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [6 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 209.98ms Time] [2021-11-13 02:38:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-11-13 02:38:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1622. [2021-11-13 02:38:06,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1622 states, 1621 states have (on average 2.677976557680444) internal successors, (4341), 1621 states have internal predecessors, (4341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 4341 transitions. [2021-11-13 02:38:06,319 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 4341 transitions. Word has length 43 [2021-11-13 02:38:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:06,320 INFO L470 AbstractCegarLoop]: Abstraction has 1622 states and 4341 transitions. [2021-11-13 02:38:06,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 4341 transitions. [2021-11-13 02:38:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:06,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:06,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:06,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-13 02:38:06,323 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:06,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1020192044, now seen corresponding path program 53 times [2021-11-13 02:38:06,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:06,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848281913] [2021-11-13 02:38:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:06,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:06,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:06,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848281913] [2021-11-13 02:38:06,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848281913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:06,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:06,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:06,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963871210] [2021-11-13 02:38:06,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:06,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:06,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:06,573 INFO L87 Difference]: Start difference. First operand 1622 states and 4341 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:06,779 INFO L93 Difference]: Finished difference Result 1932 states and 5190 transitions. [2021-11-13 02:38:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:06,782 INFO L225 Difference]: With dead ends: 1932 [2021-11-13 02:38:06,783 INFO L226 Difference]: Without dead ends: 1932 [2021-11-13 02:38:06,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:06,784 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.60ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:06,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 75 Invalid, 369 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [12 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 194.60ms Time] [2021-11-13 02:38:06,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2021-11-13 02:38:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1722. [2021-11-13 02:38:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 2.692039511911679) internal successors, (4633), 1721 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 4633 transitions. [2021-11-13 02:38:06,813 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 4633 transitions. Word has length 43 [2021-11-13 02:38:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:06,813 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 4633 transitions. [2021-11-13 02:38:06,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 4633 transitions. [2021-11-13 02:38:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:06,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:06,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:06,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-13 02:38:06,816 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:06,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1397936568, now seen corresponding path program 54 times [2021-11-13 02:38:06,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:06,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909013106] [2021-11-13 02:38:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:06,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:06,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:06,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909013106] [2021-11-13 02:38:06,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909013106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:06,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:06,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:06,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170425779] [2021-11-13 02:38:06,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:06,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:06,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:06,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:06,937 INFO L87 Difference]: Start difference. First operand 1722 states and 4633 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:07,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:07,421 INFO L93 Difference]: Finished difference Result 1934 states and 5057 transitions. [2021-11-13 02:38:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:38:07,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:07,424 INFO L225 Difference]: With dead ends: 1934 [2021-11-13 02:38:07,424 INFO L226 Difference]: Without dead ends: 1092 [2021-11-13 02:38:07,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-11-13 02:38:07,425 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 174 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 300.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.57ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 359.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:07,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 72 Invalid, 486 Unknown, 0 Unchecked, 2.57ms Time], IncrementalHoareTripleChecker [43 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 359.79ms Time] [2021-11-13 02:38:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-13 02:38:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 900. [2021-11-13 02:38:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 2.489432703003337) internal successors, (2238), 899 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2238 transitions. [2021-11-13 02:38:07,446 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2238 transitions. Word has length 43 [2021-11-13 02:38:07,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:07,446 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2238 transitions. [2021-11-13 02:38:07,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:07,446 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2238 transitions. [2021-11-13 02:38:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:07,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:07,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:07,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-13 02:38:07,449 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1142840210, now seen corresponding path program 55 times [2021-11-13 02:38:07,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:07,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338735412] [2021-11-13 02:38:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:07,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:07,609 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:07,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338735412] [2021-11-13 02:38:07,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338735412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:07,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:07,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:07,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740247536] [2021-11-13 02:38:07,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:07,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:07,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:07,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:07,611 INFO L87 Difference]: Start difference. First operand 900 states and 2238 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:07,941 INFO L93 Difference]: Finished difference Result 1382 states and 3493 transitions. [2021-11-13 02:38:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:07,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:07,949 INFO L225 Difference]: With dead ends: 1382 [2021-11-13 02:38:07,949 INFO L226 Difference]: Without dead ends: 1206 [2021-11-13 02:38:07,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:07,950 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 101 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:07,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 92 Invalid, 473 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [32 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 277.57ms Time] [2021-11-13 02:38:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-11-13 02:38:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1052. [2021-11-13 02:38:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1051 states have (on average 2.5042816365366316) internal successors, (2632), 1051 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 2632 transitions. [2021-11-13 02:38:07,972 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 2632 transitions. Word has length 43 [2021-11-13 02:38:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:07,972 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 2632 transitions. [2021-11-13 02:38:07,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:07,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 2632 transitions. [2021-11-13 02:38:07,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:07,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:07,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:07,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-13 02:38:07,974 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:07,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:07,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1266401726, now seen corresponding path program 56 times [2021-11-13 02:38:07,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:07,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921396228] [2021-11-13 02:38:07,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:07,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:08,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:08,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921396228] [2021-11-13 02:38:08,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921396228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:08,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:08,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:08,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819468881] [2021-11-13 02:38:08,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:08,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:08,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:08,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:08,151 INFO L87 Difference]: Start difference. First operand 1052 states and 2632 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:08,396 INFO L93 Difference]: Finished difference Result 1166 states and 2909 transitions. [2021-11-13 02:38:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:38:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:08,398 INFO L225 Difference]: With dead ends: 1166 [2021-11-13 02:38:08,398 INFO L226 Difference]: Without dead ends: 1060 [2021-11-13 02:38:08,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:08,398 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 114 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.88ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:08,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 56 Invalid, 356 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [32 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 197.88ms Time] [2021-11-13 02:38:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-11-13 02:38:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 986. [2021-11-13 02:38:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 985 states have (on average 2.514720812182741) internal successors, (2477), 985 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 2477 transitions. [2021-11-13 02:38:08,417 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 2477 transitions. Word has length 43 [2021-11-13 02:38:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:08,417 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 2477 transitions. [2021-11-13 02:38:08,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 2477 transitions. [2021-11-13 02:38:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:08,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:08,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:08,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-13 02:38:08,419 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2020030012, now seen corresponding path program 57 times [2021-11-13 02:38:08,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:08,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994659364] [2021-11-13 02:38:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:08,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:08,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:08,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994659364] [2021-11-13 02:38:08,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994659364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:08,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:08,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029747434] [2021-11-13 02:38:08,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:08,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:08,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:08,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:08,600 INFO L87 Difference]: Start difference. First operand 986 states and 2477 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:08,914 INFO L93 Difference]: Finished difference Result 1224 states and 3058 transitions. [2021-11-13 02:38:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:08,917 INFO L225 Difference]: With dead ends: 1224 [2021-11-13 02:38:08,917 INFO L226 Difference]: Without dead ends: 1078 [2021-11-13 02:38:08,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:08,917 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 275.10ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:08,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 79 Invalid, 473 Unknown, 0 Unchecked, 1.37ms Time], IncrementalHoareTripleChecker [13 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 275.10ms Time] [2021-11-13 02:38:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-13 02:38:08,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1012. [2021-11-13 02:38:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1011 states have (on average 2.5004945598417407) internal successors, (2528), 1011 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2528 transitions. [2021-11-13 02:38:08,933 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 2528 transitions. Word has length 43 [2021-11-13 02:38:08,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:08,933 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 2528 transitions. [2021-11-13 02:38:08,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 2528 transitions. [2021-11-13 02:38:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:08,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:08,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:08,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-13 02:38:08,935 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1105673296, now seen corresponding path program 58 times [2021-11-13 02:38:08,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:08,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278283502] [2021-11-13 02:38:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:08,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:09,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:09,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278283502] [2021-11-13 02:38:09,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278283502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:09,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:09,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:09,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421076240] [2021-11-13 02:38:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:09,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:09,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:09,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:09,192 INFO L87 Difference]: Start difference. First operand 1012 states and 2528 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:09,530 INFO L93 Difference]: Finished difference Result 1192 states and 2932 transitions. [2021-11-13 02:38:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:09,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:09,533 INFO L225 Difference]: With dead ends: 1192 [2021-11-13 02:38:09,533 INFO L226 Difference]: Without dead ends: 1192 [2021-11-13 02:38:09,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:09,534 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 256.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 306.09ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:09,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 114 Invalid, 558 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [27 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 306.09ms Time] [2021-11-13 02:38:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-11-13 02:38:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1068. [2021-11-13 02:38:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 2.5004686035613872) internal successors, (2668), 1067 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 2668 transitions. [2021-11-13 02:38:09,550 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 2668 transitions. Word has length 43 [2021-11-13 02:38:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:09,550 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 2668 transitions. [2021-11-13 02:38:09,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 2668 transitions. [2021-11-13 02:38:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:09,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:09,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:09,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-13 02:38:09,552 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1557220540, now seen corresponding path program 59 times [2021-11-13 02:38:09,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:09,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554255815] [2021-11-13 02:38:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:09,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:09,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:09,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554255815] [2021-11-13 02:38:09,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554255815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:09,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:09,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:09,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930135754] [2021-11-13 02:38:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:09,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:09,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:09,729 INFO L87 Difference]: Start difference. First operand 1068 states and 2668 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:10,055 INFO L93 Difference]: Finished difference Result 1212 states and 2984 transitions. [2021-11-13 02:38:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:10,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:10,057 INFO L225 Difference]: With dead ends: 1212 [2021-11-13 02:38:10,057 INFO L226 Difference]: Without dead ends: 1100 [2021-11-13 02:38:10,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:10,058 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 276.23ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:10,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 79 Invalid, 470 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [26 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 276.23ms Time] [2021-11-13 02:38:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-11-13 02:38:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1054. [2021-11-13 02:38:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1053 states have (on average 2.492877492877493) internal successors, (2625), 1053 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 2625 transitions. [2021-11-13 02:38:10,073 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 2625 transitions. Word has length 43 [2021-11-13 02:38:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:10,073 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 2625 transitions. [2021-11-13 02:38:10,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 2625 transitions. [2021-11-13 02:38:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:10,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:10,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:10,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-13 02:38:10,075 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash -318056688, now seen corresponding path program 60 times [2021-11-13 02:38:10,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:10,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712193302] [2021-11-13 02:38:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:10,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:10,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:10,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712193302] [2021-11-13 02:38:10,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712193302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:10,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:10,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:10,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449691747] [2021-11-13 02:38:10,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:10,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:10,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:10,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:10,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:10,279 INFO L87 Difference]: Start difference. First operand 1054 states and 2625 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:10,584 INFO L93 Difference]: Finished difference Result 1230 states and 3075 transitions. [2021-11-13 02:38:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:10,586 INFO L225 Difference]: With dead ends: 1230 [2021-11-13 02:38:10,586 INFO L226 Difference]: Without dead ends: 1092 [2021-11-13 02:38:10,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:10,586 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 294.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:10,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 106 Invalid, 550 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [7 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 294.57ms Time] [2021-11-13 02:38:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-13 02:38:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1058. [2021-11-13 02:38:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 1057 states have (on average 2.4910122989593186) internal successors, (2633), 1057 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:10,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 2633 transitions. [2021-11-13 02:38:10,609 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 2633 transitions. Word has length 43 [2021-11-13 02:38:10,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:10,609 INFO L470 AbstractCegarLoop]: Abstraction has 1058 states and 2633 transitions. [2021-11-13 02:38:10,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:10,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 2633 transitions. [2021-11-13 02:38:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:10,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:10,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:10,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-13 02:38:10,611 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:10,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:10,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1167989590, now seen corresponding path program 61 times [2021-11-13 02:38:10,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:10,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169050192] [2021-11-13 02:38:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:10,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:10,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:10,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169050192] [2021-11-13 02:38:10,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169050192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:10,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:10,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:10,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135629194] [2021-11-13 02:38:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:10,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:10,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:10,813 INFO L87 Difference]: Start difference. First operand 1058 states and 2633 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:11,092 INFO L93 Difference]: Finished difference Result 1170 states and 2911 transitions. [2021-11-13 02:38:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:38:11,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:11,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:11,095 INFO L225 Difference]: With dead ends: 1170 [2021-11-13 02:38:11,095 INFO L226 Difference]: Without dead ends: 1170 [2021-11-13 02:38:11,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:38:11,096 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 64 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 196.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.18ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:11,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 54 Invalid, 314 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [21 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 233.18ms Time] [2021-11-13 02:38:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2021-11-13 02:38:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1114. [2021-11-13 02:38:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 2.4896675651392632) internal successors, (2771), 1113 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 2771 transitions. [2021-11-13 02:38:11,122 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 2771 transitions. Word has length 43 [2021-11-13 02:38:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:11,123 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 2771 transitions. [2021-11-13 02:38:11,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 2771 transitions. [2021-11-13 02:38:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:11,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:11,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:11,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-13 02:38:11,128 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1494904246, now seen corresponding path program 62 times [2021-11-13 02:38:11,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:11,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244752803] [2021-11-13 02:38:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:11,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:11,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:11,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244752803] [2021-11-13 02:38:11,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244752803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:11,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:11,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:11,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801517920] [2021-11-13 02:38:11,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:11,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:11,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:11,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:11,336 INFO L87 Difference]: Start difference. First operand 1114 states and 2771 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:11,580 INFO L93 Difference]: Finished difference Result 1198 states and 2961 transitions. [2021-11-13 02:38:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:11,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:11,582 INFO L225 Difference]: With dead ends: 1198 [2021-11-13 02:38:11,582 INFO L226 Difference]: Without dead ends: 1078 [2021-11-13 02:38:11,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:11,583 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 173.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 208.05ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:11,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 68 Invalid, 388 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [22 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 208.05ms Time] [2021-11-13 02:38:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-13 02:38:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1074. [2021-11-13 02:38:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 2.479962721342032) internal successors, (2661), 1073 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 2661 transitions. [2021-11-13 02:38:11,605 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 2661 transitions. Word has length 43 [2021-11-13 02:38:11,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:11,605 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 2661 transitions. [2021-11-13 02:38:11,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2661 transitions. [2021-11-13 02:38:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:11,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:11,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:11,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-13 02:38:11,608 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1386554126, now seen corresponding path program 63 times [2021-11-13 02:38:11,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:11,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896217242] [2021-11-13 02:38:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:11,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:11,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:11,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:11,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896217242] [2021-11-13 02:38:11,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896217242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:11,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:11,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:11,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958543356] [2021-11-13 02:38:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:11,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:11,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:11,796 INFO L87 Difference]: Start difference. First operand 1074 states and 2661 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:12,261 INFO L93 Difference]: Finished difference Result 1402 states and 3447 transitions. [2021-11-13 02:38:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:38:12,262 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:12,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:12,264 INFO L225 Difference]: With dead ends: 1402 [2021-11-13 02:38:12,264 INFO L226 Difference]: Without dead ends: 990 [2021-11-13 02:38:12,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:38:12,265 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 118 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 364.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:12,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 101 Invalid, 563 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [32 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 364.07ms Time] [2021-11-13 02:38:12,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-11-13 02:38:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 918. [2021-11-13 02:38:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 2.4067611777535443) internal successors, (2207), 917 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 2207 transitions. [2021-11-13 02:38:12,283 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 2207 transitions. Word has length 43 [2021-11-13 02:38:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:12,283 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 2207 transitions. [2021-11-13 02:38:12,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 2207 transitions. [2021-11-13 02:38:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:12,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:12,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:12,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-13 02:38:12,286 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1289699858, now seen corresponding path program 64 times [2021-11-13 02:38:12,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:12,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405026799] [2021-11-13 02:38:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:12,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:12,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:12,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405026799] [2021-11-13 02:38:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405026799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:12,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:12,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:12,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955307194] [2021-11-13 02:38:12,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:12,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:12,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:12,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:12,466 INFO L87 Difference]: Start difference. First operand 918 states and 2207 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:12,859 INFO L93 Difference]: Finished difference Result 928 states and 2162 transitions. [2021-11-13 02:38:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:12,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:12,861 INFO L225 Difference]: With dead ends: 928 [2021-11-13 02:38:12,861 INFO L226 Difference]: Without dead ends: 652 [2021-11-13 02:38:12,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:38:12,862 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 95 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 265.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.80ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:12,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 82 Invalid, 463 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [22 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 313.80ms Time] [2021-11-13 02:38:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-11-13 02:38:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2021-11-13 02:38:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 2.2549923195084487) internal successors, (1468), 651 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1468 transitions. [2021-11-13 02:38:12,877 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1468 transitions. Word has length 43 [2021-11-13 02:38:12,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:12,879 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1468 transitions. [2021-11-13 02:38:12,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1468 transitions. [2021-11-13 02:38:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:12,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:12,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:12,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-13 02:38:12,881 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:12,882 INFO L85 PathProgramCache]: Analyzing trace with hash 32532900, now seen corresponding path program 65 times [2021-11-13 02:38:12,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:12,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685819386] [2021-11-13 02:38:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:12,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:13,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:13,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685819386] [2021-11-13 02:38:13,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685819386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:13,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:13,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:13,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401968468] [2021-11-13 02:38:13,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:13,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:13,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:13,009 INFO L87 Difference]: Start difference. First operand 652 states and 1468 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:13,293 INFO L93 Difference]: Finished difference Result 784 states and 1746 transitions. [2021-11-13 02:38:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:13,295 INFO L225 Difference]: With dead ends: 784 [2021-11-13 02:38:13,295 INFO L226 Difference]: Without dead ends: 640 [2021-11-13 02:38:13,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:13,296 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 258.66ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:13,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 80 Invalid, 382 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [15 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 258.66ms Time] [2021-11-13 02:38:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-13 02:38:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 544. [2021-11-13 02:38:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.2136279926335174) internal successors, (1202), 543 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:13,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1202 transitions. [2021-11-13 02:38:13,307 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1202 transitions. Word has length 43 [2021-11-13 02:38:13,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:13,307 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1202 transitions. [2021-11-13 02:38:13,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1202 transitions. [2021-11-13 02:38:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:13,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:13,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:13,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-13 02:38:13,310 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1695956944, now seen corresponding path program 66 times [2021-11-13 02:38:13,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:13,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296517531] [2021-11-13 02:38:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:13,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:13,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:13,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296517531] [2021-11-13 02:38:13,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296517531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:13,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:13,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:13,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064485238] [2021-11-13 02:38:13,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:13,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:13,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:13,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:13,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:13,487 INFO L87 Difference]: Start difference. First operand 544 states and 1202 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:13,810 INFO L93 Difference]: Finished difference Result 640 states and 1400 transitions. [2021-11-13 02:38:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:13,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:13,812 INFO L225 Difference]: With dead ends: 640 [2021-11-13 02:38:13,812 INFO L226 Difference]: Without dead ends: 514 [2021-11-13 02:38:13,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:13,812 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 238.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.90ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:13,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 58 Invalid, 392 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [34 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 283.90ms Time] [2021-11-13 02:38:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-13 02:38:13,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 508. [2021-11-13 02:38:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 2.193293885601578) internal successors, (1112), 507 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1112 transitions. [2021-11-13 02:38:13,824 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1112 transitions. Word has length 43 [2021-11-13 02:38:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:13,824 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1112 transitions. [2021-11-13 02:38:13,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1112 transitions. [2021-11-13 02:38:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:13,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:13,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:13,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-13 02:38:13,827 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1067546054, now seen corresponding path program 67 times [2021-11-13 02:38:13,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:13,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767230405] [2021-11-13 02:38:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:13,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:14,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:14,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767230405] [2021-11-13 02:38:14,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767230405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:14,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:14,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:38:14,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809790008] [2021-11-13 02:38:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:14,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:38:14,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:38:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:14,002 INFO L87 Difference]: Start difference. First operand 508 states and 1112 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:14,171 INFO L93 Difference]: Finished difference Result 538 states and 1165 transitions. [2021-11-13 02:38:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:38:14,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:14,173 INFO L225 Difference]: With dead ends: 538 [2021-11-13 02:38:14,173 INFO L226 Difference]: Without dead ends: 506 [2021-11-13 02:38:14,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:14,174 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:14,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 30 Invalid, 226 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 162.61ms Time] [2021-11-13 02:38:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-13 02:38:14,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-11-13 02:38:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 2.1841584158415843) internal successors, (1103), 505 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 1103 transitions. [2021-11-13 02:38:14,185 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 1103 transitions. Word has length 43 [2021-11-13 02:38:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:14,185 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 1103 transitions. [2021-11-13 02:38:14,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1103 transitions. [2021-11-13 02:38:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:14,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:14,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:14,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-13 02:38:14,187 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:14,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1024389656, now seen corresponding path program 68 times [2021-11-13 02:38:14,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:14,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604323061] [2021-11-13 02:38:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:14,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:14,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:14,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604323061] [2021-11-13 02:38:14,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604323061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:14,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:14,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:14,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805595077] [2021-11-13 02:38:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:14,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:14,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:14,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:14,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:14,423 INFO L87 Difference]: Start difference. First operand 506 states and 1103 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:14,690 INFO L93 Difference]: Finished difference Result 536 states and 1160 transitions. [2021-11-13 02:38:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:38:14,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:14,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:14,692 INFO L225 Difference]: With dead ends: 536 [2021-11-13 02:38:14,692 INFO L226 Difference]: Without dead ends: 482 [2021-11-13 02:38:14,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:14,693 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.25ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:14,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 46 Invalid, 302 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [22 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 201.25ms Time] [2021-11-13 02:38:14,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-13 02:38:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-11-13 02:38:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 2.187110187110187) internal successors, (1052), 481 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1052 transitions. [2021-11-13 02:38:14,702 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1052 transitions. Word has length 43 [2021-11-13 02:38:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:14,702 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1052 transitions. [2021-11-13 02:38:14,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1052 transitions. [2021-11-13 02:38:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:14,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:14,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:14,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-13 02:38:14,704 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1674643116, now seen corresponding path program 69 times [2021-11-13 02:38:14,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:14,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377111616] [2021-11-13 02:38:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:14,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:14,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:14,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377111616] [2021-11-13 02:38:14,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377111616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:14,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:14,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 02:38:14,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61907517] [2021-11-13 02:38:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:14,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:38:14,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:14,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:38:14,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:14,879 INFO L87 Difference]: Start difference. First operand 482 states and 1052 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:15,156 INFO L93 Difference]: Finished difference Result 512 states and 1109 transitions. [2021-11-13 02:38:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:38:15,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:15,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:15,157 INFO L225 Difference]: With dead ends: 512 [2021-11-13 02:38:15,157 INFO L226 Difference]: Without dead ends: 446 [2021-11-13 02:38:15,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:15,158 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.09ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:15,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 68 Invalid, 348 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [6 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 251.09ms Time] [2021-11-13 02:38:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-13 02:38:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-13 02:38:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.1707865168539326) internal successors, (966), 445 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 966 transitions. [2021-11-13 02:38:15,166 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 966 transitions. Word has length 43 [2021-11-13 02:38:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:15,166 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 966 transitions. [2021-11-13 02:38:15,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 966 transitions. [2021-11-13 02:38:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:15,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:15,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:15,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-13 02:38:15,168 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1364696914, now seen corresponding path program 70 times [2021-11-13 02:38:15,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:15,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884762205] [2021-11-13 02:38:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:15,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:15,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:15,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884762205] [2021-11-13 02:38:15,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884762205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:15,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:15,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:15,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993460041] [2021-11-13 02:38:15,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:15,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:15,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:15,384 INFO L87 Difference]: Start difference. First operand 446 states and 966 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:15,670 INFO L93 Difference]: Finished difference Result 472 states and 1013 transitions. [2021-11-13 02:38:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:15,672 INFO L225 Difference]: With dead ends: 472 [2021-11-13 02:38:15,672 INFO L226 Difference]: Without dead ends: 446 [2021-11-13 02:38:15,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:38:15,673 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 79 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.49ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:15,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 70 Invalid, 413 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [39 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 194.49ms Time] [2021-11-13 02:38:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-13 02:38:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-13 02:38:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.1662921348314605) internal successors, (964), 445 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) [2021-11-13 02:38:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 964 transitions. [2021-11-13 02:38:15,679 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 964 transitions. Word has length 43 [2021-11-13 02:38:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:15,679 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 964 transitions. [2021-11-13 02:38:15,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 964 transitions. [2021-11-13 02:38:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:15,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:15,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:15,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-13 02:38:15,680 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -654903648, now seen corresponding path program 71 times [2021-11-13 02:38:15,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:15,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265100046] [2021-11-13 02:38:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:15,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:15,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:15,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265100046] [2021-11-13 02:38:15,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265100046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:15,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:15,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:15,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631278107] [2021-11-13 02:38:15,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:15,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:15,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:15,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:15,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:15,868 INFO L87 Difference]: Start difference. First operand 446 states and 964 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:16,135 INFO L93 Difference]: Finished difference Result 470 states and 1008 transitions. [2021-11-13 02:38:16,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:38:16,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:16,136 INFO L225 Difference]: With dead ends: 470 [2021-11-13 02:38:16,136 INFO L226 Difference]: Without dead ends: 418 [2021-11-13 02:38:16,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:16,137 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 50 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 231.47ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:16,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 62 Invalid, 368 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [10 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 231.47ms Time] [2021-11-13 02:38:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-13 02:38:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2021-11-13 02:38:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 2.1678657074340526) internal successors, (904), 417 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 904 transitions. [2021-11-13 02:38:16,142 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 904 transitions. Word has length 43 [2021-11-13 02:38:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:16,142 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 904 transitions. [2021-11-13 02:38:16,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 904 transitions. [2021-11-13 02:38:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:16,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:16,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-13 02:38:16,143 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1963752222, now seen corresponding path program 72 times [2021-11-13 02:38:16,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:16,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277213807] [2021-11-13 02:38:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:16,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:16,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:16,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277213807] [2021-11-13 02:38:16,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277213807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:16,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:16,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:16,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858189472] [2021-11-13 02:38:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:16,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:16,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:16,414 INFO L87 Difference]: Start difference. First operand 418 states and 904 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:16,689 INFO L93 Difference]: Finished difference Result 352 states and 751 transitions. [2021-11-13 02:38:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:38:16,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:16,690 INFO L225 Difference]: With dead ends: 352 [2021-11-13 02:38:16,690 INFO L226 Difference]: Without dead ends: 234 [2021-11-13 02:38:16,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:16,691 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 209.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 247.44ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:16,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 53 Invalid, 378 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [7 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 247.44ms Time] [2021-11-13 02:38:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-13 02:38:16,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-13 02:38:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 2.1587982832618025) internal successors, (503), 233 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 503 transitions. [2021-11-13 02:38:16,696 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 503 transitions. Word has length 43 [2021-11-13 02:38:16,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:16,697 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 503 transitions. [2021-11-13 02:38:16,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 503 transitions. [2021-11-13 02:38:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:16,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:16,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:16,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-13 02:38:16,699 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:16,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1594386230, now seen corresponding path program 73 times [2021-11-13 02:38:16,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:16,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272261831] [2021-11-13 02:38:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:16,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:16,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:16,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272261831] [2021-11-13 02:38:16,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272261831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:16,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:16,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:16,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569519544] [2021-11-13 02:38:16,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:16,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:16,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:16,867 INFO L87 Difference]: Start difference. First operand 234 states and 503 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:17,175 INFO L93 Difference]: Finished difference Result 296 states and 612 transitions. [2021-11-13 02:38:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 02:38:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:17,177 INFO L225 Difference]: With dead ends: 296 [2021-11-13 02:38:17,177 INFO L226 Difference]: Without dead ends: 218 [2021-11-13 02:38:17,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:38:17,177 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 196.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.42ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:17,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 63 Invalid, 352 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [17 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 233.42ms Time] [2021-11-13 02:38:17,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-13 02:38:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-13 02:38:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.133640552995392) internal successors, (463), 217 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 463 transitions. [2021-11-13 02:38:17,182 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 463 transitions. Word has length 43 [2021-11-13 02:38:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:17,182 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 463 transitions. [2021-11-13 02:38:17,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 463 transitions. [2021-11-13 02:38:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:17,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:17,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:17,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-13 02:38:17,184 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:17,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1189453242, now seen corresponding path program 74 times [2021-11-13 02:38:17,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:17,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988603235] [2021-11-13 02:38:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:17,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:17,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:17,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988603235] [2021-11-13 02:38:17,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988603235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:17,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:17,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 02:38:17,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014261309] [2021-11-13 02:38:17,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:17,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 02:38:17,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:17,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 02:38:17,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:38:17,397 INFO L87 Difference]: Start difference. First operand 218 states and 463 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:17,562 INFO L93 Difference]: Finished difference Result 252 states and 524 transitions. [2021-11-13 02:38:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:17,563 INFO L225 Difference]: With dead ends: 252 [2021-11-13 02:38:17,563 INFO L226 Difference]: Without dead ends: 214 [2021-11-13 02:38:17,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:17,564 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.91ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:17,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 33 Invalid, 207 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 151.91ms Time] [2021-11-13 02:38:17,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-13 02:38:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2021-11-13 02:38:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 2.123222748815166) internal successors, (448), 211 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 448 transitions. [2021-11-13 02:38:17,568 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 448 transitions. Word has length 43 [2021-11-13 02:38:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:17,568 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 448 transitions. [2021-11-13 02:38:17,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 448 transitions. [2021-11-13 02:38:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:17,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:17,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:17,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-13 02:38:17,570 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash 452446522, now seen corresponding path program 75 times [2021-11-13 02:38:17,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:17,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20008417] [2021-11-13 02:38:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:17,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:17,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:17,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20008417] [2021-11-13 02:38:17,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20008417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:17,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:17,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:17,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569075184] [2021-11-13 02:38:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:17,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:17,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:17,804 INFO L87 Difference]: Start difference. First operand 212 states and 448 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:18,052 INFO L93 Difference]: Finished difference Result 304 states and 640 transitions. [2021-11-13 02:38:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:18,053 INFO L225 Difference]: With dead ends: 304 [2021-11-13 02:38:18,053 INFO L226 Difference]: Without dead ends: 278 [2021-11-13 02:38:18,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:18,054 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 239.83ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:18,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 67 Invalid, 333 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [11 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 239.83ms Time] [2021-11-13 02:38:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-13 02:38:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 220. [2021-11-13 02:38:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 2.1095890410958904) internal successors, (462), 219 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 462 transitions. [2021-11-13 02:38:18,060 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 462 transitions. Word has length 43 [2021-11-13 02:38:18,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:18,060 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 462 transitions. [2021-11-13 02:38:18,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 462 transitions. [2021-11-13 02:38:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:18,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:18,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:18,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-13 02:38:18,062 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash -580967046, now seen corresponding path program 76 times [2021-11-13 02:38:18,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:18,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115982516] [2021-11-13 02:38:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:18,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:18,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:18,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115982516] [2021-11-13 02:38:18,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115982516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:18,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:18,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:18,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880030595] [2021-11-13 02:38:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:18,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:18,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:18,295 INFO L87 Difference]: Start difference. First operand 220 states and 462 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:18,525 INFO L93 Difference]: Finished difference Result 220 states and 458 transitions. [2021-11-13 02:38:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 02:38:18,526 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:18,527 INFO L225 Difference]: With dead ends: 220 [2021-11-13 02:38:18,527 INFO L226 Difference]: Without dead ends: 188 [2021-11-13 02:38:18,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:18,527 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.22ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:18,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 58 Invalid, 284 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [14 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 193.22ms Time] [2021-11-13 02:38:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-13 02:38:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-13 02:38:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.0962566844919786) internal successors, (392), 187 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 392 transitions. [2021-11-13 02:38:18,532 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 392 transitions. Word has length 43 [2021-11-13 02:38:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:18,532 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 392 transitions. [2021-11-13 02:38:18,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 392 transitions. [2021-11-13 02:38:18,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:18,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:18,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:18,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-13 02:38:18,533 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -252107552, now seen corresponding path program 77 times [2021-11-13 02:38:18,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:18,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095799689] [2021-11-13 02:38:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:18,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:18,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:18,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095799689] [2021-11-13 02:38:18,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095799689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:18,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:18,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 02:38:18,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500709448] [2021-11-13 02:38:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:18,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:38:18,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:38:18,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:38:18,693 INFO L87 Difference]: Start difference. First operand 188 states and 392 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:18,831 INFO L93 Difference]: Finished difference Result 222 states and 453 transitions. [2021-11-13 02:38:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:38:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:18,832 INFO L225 Difference]: With dead ends: 222 [2021-11-13 02:38:18,832 INFO L226 Difference]: Without dead ends: 190 [2021-11-13 02:38:18,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:38:18,833 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.91ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:18,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 30 Invalid, 192 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 122.91ms Time] [2021-11-13 02:38:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-13 02:38:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2021-11-13 02:38:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.081081081081081) internal successors, (385), 185 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 385 transitions. [2021-11-13 02:38:18,837 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 385 transitions. Word has length 43 [2021-11-13 02:38:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:18,838 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 385 transitions. [2021-11-13 02:38:18,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 385 transitions. [2021-11-13 02:38:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:18,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:18,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:18,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-13 02:38:18,839 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:18,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:18,840 INFO L85 PathProgramCache]: Analyzing trace with hash 353927234, now seen corresponding path program 78 times [2021-11-13 02:38:18,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:18,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391393802] [2021-11-13 02:38:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:18,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:19,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:19,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391393802] [2021-11-13 02:38:19,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391393802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:19,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:19,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 02:38:19,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165589121] [2021-11-13 02:38:19,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:19,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:38:19,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:19,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:38:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:38:19,009 INFO L87 Difference]: Start difference. First operand 186 states and 385 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:19,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:19,130 INFO L93 Difference]: Finished difference Result 216 states and 438 transitions. [2021-11-13 02:38:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:38:19,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:19,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:19,131 INFO L225 Difference]: With dead ends: 216 [2021-11-13 02:38:19,131 INFO L226 Difference]: Without dead ends: 156 [2021-11-13 02:38:19,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:38:19,132 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.95ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:19,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 191 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 103.95ms Time] [2021-11-13 02:38:19,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-13 02:38:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-13 02:38:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.961290322580645) internal successors, (304), 155 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 304 transitions. [2021-11-13 02:38:19,136 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 304 transitions. Word has length 43 [2021-11-13 02:38:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:19,136 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 304 transitions. [2021-11-13 02:38:19,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 304 transitions. [2021-11-13 02:38:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:19,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:19,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:19,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-13 02:38:19,138 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1522870246, now seen corresponding path program 79 times [2021-11-13 02:38:19,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:19,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049937980] [2021-11-13 02:38:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:19,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:19,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:19,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049937980] [2021-11-13 02:38:19,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049937980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:19,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:19,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 02:38:19,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578578028] [2021-11-13 02:38:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:19,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:38:19,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:38:19,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:38:19,365 INFO L87 Difference]: Start difference. First operand 156 states and 304 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:19,647 INFO L93 Difference]: Finished difference Result 184 states and 354 transitions. [2021-11-13 02:38:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 02:38:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:19,648 INFO L225 Difference]: With dead ends: 184 [2021-11-13 02:38:19,648 INFO L226 Difference]: Without dead ends: 148 [2021-11-13 02:38:19,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:38:19,649 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.25ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:19,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 64 Invalid, 300 Unknown, 0 Unchecked, 1.25ms Time], IncrementalHoareTripleChecker [7 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 213.36ms Time] [2021-11-13 02:38:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-13 02:38:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-13 02:38:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.945578231292517) internal successors, (286), 147 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 286 transitions. [2021-11-13 02:38:19,652 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 286 transitions. Word has length 43 [2021-11-13 02:38:19,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:19,652 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 286 transitions. [2021-11-13 02:38:19,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 286 transitions. [2021-11-13 02:38:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 02:38:19,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:19,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:38:19,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-13 02:38:19,655 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-13 02:38:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:19,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1812991152, now seen corresponding path program 80 times [2021-11-13 02:38:19,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:38:19,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771272634] [2021-11-13 02:38:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:19,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:38:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:19,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:38:19,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771272634] [2021-11-13 02:38:19,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771272634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:19,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:19,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 02:38:19,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842513931] [2021-11-13 02:38:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:19,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 02:38:19,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 02:38:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:38:19,937 INFO L87 Difference]: Start difference. First operand 148 states and 286 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:20,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:20,089 INFO L93 Difference]: Finished difference Result 74 states and 128 transitions. [2021-11-13 02:38:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:38:20,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-13 02:38:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:20,090 INFO L225 Difference]: With dead ends: 74 [2021-11-13 02:38:20,090 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 02:38:20,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:38:20,091 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:20,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 158 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [17 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 110.63ms Time] [2021-11-13 02:38:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 02:38:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 02:38:20,091 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) [2021-11-13 02:38:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 02:38:20,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-11-13 02:38:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:20,092 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 02:38:20,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:38:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 02:38:20,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 02:38:20,095 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-13 02:38:20,095 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-13 02:38:20,096 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-13 02:38:20,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-13 02:38:20,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-13 02:38:20,101 INFO L732 BasicCegarLoop]: Path program histogram: [80] [2021-11-13 02:38:20,103 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-13 02:38:20,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:38:20,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:38:20 BasicIcfg [2021-11-13 02:38:20,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:38:20,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:38:20,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:38:20,108 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:38:20,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:37:14" (3/4) ... [2021-11-13 02:38:20,112 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 02:38:20,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-13 02:38:20,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-13 02:38:20,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-13 02:38:20,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-13 02:38:20,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-13 02:38:20,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-13 02:38:20,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 02:38:20,194 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 02:38:20,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:38:20,195 INFO L158 Benchmark]: Toolchain (without parser) took 66876.79ms. Allocated memory was 92.3MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 56.6MB in the beginning and 1.4GB in the end (delta: -1.4GB). Peak memory consumption was 326.9MB. Max. memory is 16.1GB. [2021-11-13 02:38:20,196 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:20,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.13ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 56.5MB in the beginning and 100.6MB in the end (delta: -44.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:38:20,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.79ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 98.5MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 02:38:20,197 INFO L158 Benchmark]: Boogie Preprocessor took 36.28ms. Allocated memory is still 127.9MB. Free memory was 98.5MB in the beginning and 97.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:20,197 INFO L158 Benchmark]: RCFGBuilder took 862.41ms. Allocated memory is still 127.9MB. Free memory was 96.4MB in the beginning and 69.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-13 02:38:20,197 INFO L158 Benchmark]: TraceAbstraction took 65439.04ms. Allocated memory was 127.9MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 68.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 300.5MB. Max. memory is 16.1GB. [2021-11-13 02:38:20,197 INFO L158 Benchmark]: Witness Printer took 87.31ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.4GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 02:38:20,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.13ms. Allocated memory was 92.3MB in the beginning and 127.9MB in the end (delta: 35.7MB). Free memory was 56.5MB in the beginning and 100.6MB in the end (delta: -44.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.79ms. Allocated memory is still 127.9MB. Free memory was 100.6MB in the beginning and 98.5MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.28ms. Allocated memory is still 127.9MB. Free memory was 98.5MB in the beginning and 97.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 862.41ms. Allocated memory is still 127.9MB. Free memory was 96.4MB in the beginning and 69.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 65439.04ms. Allocated memory was 127.9MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 68.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 300.5MB. Max. memory is 16.1GB. * Witness Printer took 87.31ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.4GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 160 PlacesBefore, 57 PlacesAfterwards, 152 TransitionsBefore, 47 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 110 TotalNumberOfCompositions, 14218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5555, positive: 5106, positive conditional: 0, positive unconditional: 5106, negative: 449, negative conditional: 0, negative unconditional: 449, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1473, positive: 1388, positive conditional: 0, positive unconditional: 1388, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1473, positive: 1363, positive conditional: 0, positive unconditional: 1363, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 110, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 225, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 180, negative conditional: 0, negative unconditional: 180, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5555, positive: 3718, positive conditional: 0, positive unconditional: 3718, negative: 364, negative conditional: 0, negative unconditional: 364, unknown: 1473, unknown conditional: 0, unknown unconditional: 1473] , Statistics on independence cache: Total cache size (in pairs): 526, Positive cache size: 477, Positive conditional cache size: 0, Positive unconditional cache size: 477, Negative cache size: 49, Negative conditional cache size: 0, Negative unconditional cache size: 49 - 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: 196]: 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 with 1 thread instances CFG has 7 procedures, 199 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 65.2s, OverallIterations: 80, TraceHistogramMax: 1, PathProgramHistogramMax: 80, EmptinessCheckTime: 0.7s, AutomataDifference: 32.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8475 SdHoareTripleChecker+Valid, 24795.55ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8475 mSDsluCounter, 6332 SdHoareTripleChecker+Invalid, 20572.61ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20951 mSDsCounter, 2131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37404 IncrementalHoareTripleChecker+Invalid, 39535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2131 mSolverCounterUnsat, 1290 mSDtfsCounter, 37404 mSolverCounterSat, 182.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1072 GetRequests, 228 SyntacticMatches, 60 SemanticMatches, 784 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7964occurred in iteration=26, InterpolantAutomatonStates: 821, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.4s AutomataMinimizationTime, 80 MinimizatonAttempts, 48122 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 3440 NumberOfCodeBlocks, 3440 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 3360 ConstructedInterpolants, 0 QuantifiedInterpolants, 22849 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 80 InterpolantComputations, 80 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! [2021-11-13 02:38:20,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eb6acfb-bf94-461a-90f1-6aca44fa0f40/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE