./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e1221f43edcd55fb28cc2c33b3cd78828237d81c097e561fccaa486cdd56e141 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:14:44,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:14:44,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:14:44,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:14:44,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:14:44,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:14:44,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:14:44,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:14:44,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:14:44,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:14:44,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:14:44,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:14:44,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:14:44,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:14:44,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:14:44,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:14:44,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:14:44,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:14:44,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:14:44,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:14:44,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:14:44,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:14:44,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:14:44,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:14:44,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:14:44,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:14:44,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:14:44,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:14:44,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:14:44,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:14:44,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:14:44,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:14:44,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:14:44,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:14:44,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:14:44,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:14:44,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:14:44,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:14:44,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:14:44,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:14:44,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:14:44,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:14:44,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:14:44,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:14:44,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:14:44,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:14:44,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:14:44,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:14:44,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:14:44,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:14:44,635 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:14:44,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:14:44,635 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:14:44,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:14:44,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:14:44,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:14:44,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:14:44,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:14:44,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:14:44,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:14:44,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:14:44,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:14:44,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:14:44,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:14:44,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:14:44,638 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:14:44,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:14:44,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:14:44,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:14:44,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1221f43edcd55fb28cc2c33b3cd78828237d81c097e561fccaa486cdd56e141 [2021-12-06 22:14:44,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:14:44,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:14:44,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:14:44,827 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:14:44,828 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:14:44,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-06 22:14:44,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/data/ae0caafa6/13c9514f19b24d9ea314ba82eef68272/FLAG90e1abe10 [2021-12-06 22:14:45,286 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:14:45,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-06 22:14:45,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/data/ae0caafa6/13c9514f19b24d9ea314ba82eef68272/FLAG90e1abe10 [2021-12-06 22:14:45,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/data/ae0caafa6/13c9514f19b24d9ea314ba82eef68272 [2021-12-06 22:14:45,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:14:45,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:14:45,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:14:45,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:14:45,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:14:45,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b843d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45, skipping insertion in model container [2021-12-06 22:14:45,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:14:45,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:14:45,496 WARN L230 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_450b4e7f-b894-434a-980a-bc70d1314fbd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2021-12-06 22:14:45,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:14:45,539 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:14:45,579 WARN L230 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_450b4e7f-b894-434a-980a-bc70d1314fbd/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2021-12-06 22:14:45,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:14:45,612 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:14:45,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45 WrapperNode [2021-12-06 22:14:45,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:14:45,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:14:45,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:14:45,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:14:45,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,654 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 636 [2021-12-06 22:14:45,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:14:45,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:14:45,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:14:45,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:14:45,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:14:45,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:14:45,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:14:45,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:14:45,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (1/1) ... [2021-12-06 22:14:45,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:14:45,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:14:45,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:14:45,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_450b4e7f-b894-434a-980a-bc70d1314fbd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:14:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:14:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:14:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:14:45,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:14:45,825 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:14:45,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:14:46,203 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:14:46,212 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:14:46,212 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:14:46,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:14:46 BoogieIcfgContainer [2021-12-06 22:14:46,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:14:46,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:14:46,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:14:46,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:14:46,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:14:45" (1/3) ... [2021-12-06 22:14:46,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0de626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:14:46, skipping insertion in model container [2021-12-06 22:14:46,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:14:45" (2/3) ... [2021-12-06 22:14:46,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0de626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:14:46, skipping insertion in model container [2021-12-06 22:14:46,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:14:46" (3/3) ... [2021-12-06 22:14:46,228 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-12-06 22:14:46,233 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:14:46,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:14:46,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:14:46,284 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=PETRI_NET, 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 [2021-12-06 22:14:46,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:14:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 168 states have (on average 1.7202380952380953) internal successors, (289), 169 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 22:14:46,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:46,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:46,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1270648051, now seen corresponding path program 1 times [2021-12-06 22:14:46,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:46,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704350252] [2021-12-06 22:14:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:46,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:46,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704350252] [2021-12-06 22:14:46,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704350252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:46,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:46,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:14:46,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703058095] [2021-12-06 22:14:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:46,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:14:46,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:14:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:14:46,645 INFO L87 Difference]: Start difference. First operand has 170 states, 168 states have (on average 1.7202380952380953) internal successors, (289), 169 states have internal predecessors, (289), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:46,797 INFO L93 Difference]: Finished difference Result 605 states and 979 transitions. [2021-12-06 22:14:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:14:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 22:14:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:46,811 INFO L225 Difference]: With dead ends: 605 [2021-12-06 22:14:46,811 INFO L226 Difference]: Without dead ends: 511 [2021-12-06 22:14:46,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:14:46,816 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 1748 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:46,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 958 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:14:46,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-06 22:14:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 260. [2021-12-06 22:14:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.5096525096525097) internal successors, (391), 259 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 391 transitions. [2021-12-06 22:14:46,870 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 391 transitions. Word has length 63 [2021-12-06 22:14:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 391 transitions. [2021-12-06 22:14:46,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 391 transitions. [2021-12-06 22:14:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 22:14:46,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:46,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:46,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:14:46,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 473041692, now seen corresponding path program 1 times [2021-12-06 22:14:46,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:46,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570849218] [2021-12-06 22:14:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:46,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:47,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:47,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570849218] [2021-12-06 22:14:47,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570849218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:47,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:47,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:14:47,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894979501] [2021-12-06 22:14:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:47,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:14:47,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:14:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:14:47,027 INFO L87 Difference]: Start difference. First operand 260 states and 391 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:47,194 INFO L93 Difference]: Finished difference Result 968 states and 1495 transitions. [2021-12-06 22:14:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:14:47,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-06 22:14:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:47,200 INFO L225 Difference]: With dead ends: 968 [2021-12-06 22:14:47,201 INFO L226 Difference]: Without dead ends: 766 [2021-12-06 22:14:47,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:14:47,204 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 897 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:47,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 963 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:14:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-06 22:14:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 760. [2021-12-06 22:14:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 759 states have (on average 1.533596837944664) internal successors, (1164), 759 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1164 transitions. [2021-12-06 22:14:47,272 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1164 transitions. Word has length 64 [2021-12-06 22:14:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:47,273 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1164 transitions. [2021-12-06 22:14:47,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:47,273 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1164 transitions. [2021-12-06 22:14:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 22:14:47,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:47,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:47,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:14:47,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:47,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash -222648813, now seen corresponding path program 1 times [2021-12-06 22:14:47,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:47,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546490850] [2021-12-06 22:14:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:47,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:47,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:47,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546490850] [2021-12-06 22:14:47,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546490850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:47,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:47,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:14:47,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472770896] [2021-12-06 22:14:47,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:47,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:14:47,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:47,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:14:47,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:47,373 INFO L87 Difference]: Start difference. First operand 760 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:47,597 INFO L93 Difference]: Finished difference Result 2032 states and 3154 transitions. [2021-12-06 22:14:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:14:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-06 22:14:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:47,604 INFO L225 Difference]: With dead ends: 2032 [2021-12-06 22:14:47,604 INFO L226 Difference]: Without dead ends: 1318 [2021-12-06 22:14:47,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:14:47,607 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 940 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:47,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 235 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:14:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-12-06 22:14:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2021-12-06 22:14:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 1.5429657794676805) internal successors, (2029), 1315 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 2029 transitions. [2021-12-06 22:14:47,672 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 2029 transitions. Word has length 65 [2021-12-06 22:14:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:47,672 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 2029 transitions. [2021-12-06 22:14:47,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:47,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 2029 transitions. [2021-12-06 22:14:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 22:14:47,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:47,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:47,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:14:47,675 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:47,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:47,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1106030069, now seen corresponding path program 1 times [2021-12-06 22:14:47,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:47,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768350481] [2021-12-06 22:14:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:47,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:47,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:47,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768350481] [2021-12-06 22:14:47,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768350481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:47,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:47,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:14:47,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764334464] [2021-12-06 22:14:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:47,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:14:47,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:47,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:14:47,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:47,736 INFO L87 Difference]: Start difference. First operand 1316 states and 2029 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:47,992 INFO L93 Difference]: Finished difference Result 3528 states and 5495 transitions. [2021-12-06 22:14:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:14:47,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-06 22:14:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:48,003 INFO L225 Difference]: With dead ends: 3528 [2021-12-06 22:14:48,003 INFO L226 Difference]: Without dead ends: 2308 [2021-12-06 22:14:48,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:14:48,006 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 866 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:48,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 241 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:14:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2021-12-06 22:14:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2306. [2021-12-06 22:14:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.5475054229934924) internal successors, (3567), 2305 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3567 transitions. [2021-12-06 22:14:48,120 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3567 transitions. Word has length 65 [2021-12-06 22:14:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:48,121 INFO L470 AbstractCegarLoop]: Abstraction has 2306 states and 3567 transitions. [2021-12-06 22:14:48,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3567 transitions. [2021-12-06 22:14:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 22:14:48,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:48,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:48,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:14:48,122 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 244768548, now seen corresponding path program 1 times [2021-12-06 22:14:48,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:48,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941431046] [2021-12-06 22:14:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:48,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:48,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:48,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:48,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941431046] [2021-12-06 22:14:48,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941431046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:48,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:48,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:14:48,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663258780] [2021-12-06 22:14:48,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:48,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:14:48,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:48,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:14:48,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:48,183 INFO L87 Difference]: Start difference. First operand 2306 states and 3567 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:48,501 INFO L93 Difference]: Finished difference Result 6569 states and 10218 transitions. [2021-12-06 22:14:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:14:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-06 22:14:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:48,521 INFO L225 Difference]: With dead ends: 6569 [2021-12-06 22:14:48,521 INFO L226 Difference]: Without dead ends: 4332 [2021-12-06 22:14:48,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:14:48,526 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 896 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:48,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 237 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:14:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-12-06 22:14:48,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 4330. [2021-12-06 22:14:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 4329 states have (on average 1.5456225456225456) internal successors, (6691), 4329 states have internal predecessors, (6691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 6691 transitions. [2021-12-06 22:14:48,727 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 6691 transitions. Word has length 65 [2021-12-06 22:14:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:48,728 INFO L470 AbstractCegarLoop]: Abstraction has 4330 states and 6691 transitions. [2021-12-06 22:14:48,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 6691 transitions. [2021-12-06 22:14:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 22:14:48,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:48,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:48,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:14:48,731 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:48,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2050472616, now seen corresponding path program 1 times [2021-12-06 22:14:48,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:48,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147054565] [2021-12-06 22:14:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:48,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:48,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:48,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147054565] [2021-12-06 22:14:48,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147054565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:48,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:48,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:14:48,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255961387] [2021-12-06 22:14:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:48,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:14:48,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:14:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:48,834 INFO L87 Difference]: Start difference. First operand 4330 states and 6691 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:49,286 INFO L93 Difference]: Finished difference Result 8380 states and 12940 transitions. [2021-12-06 22:14:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:14:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-06 22:14:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:49,335 INFO L225 Difference]: With dead ends: 8380 [2021-12-06 22:14:49,335 INFO L226 Difference]: Without dead ends: 8378 [2021-12-06 22:14:49,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:14:49,338 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 230 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:49,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 939 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:14:49,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8378 states. [2021-12-06 22:14:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8378 to 4458. [2021-12-06 22:14:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 1.5299528831052278) internal successors, (6819), 4457 states have internal predecessors, (6819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6819 transitions. [2021-12-06 22:14:49,651 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6819 transitions. Word has length 66 [2021-12-06 22:14:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:49,651 INFO L470 AbstractCegarLoop]: Abstraction has 4458 states and 6819 transitions. [2021-12-06 22:14:49,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6819 transitions. [2021-12-06 22:14:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:14:49,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:49,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:49,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:14:49,653 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash -598564162, now seen corresponding path program 1 times [2021-12-06 22:14:49,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:49,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859696833] [2021-12-06 22:14:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:49,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:49,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:49,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859696833] [2021-12-06 22:14:49,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859696833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:49,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:49,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:14:49,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900188623] [2021-12-06 22:14:49,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:49,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:14:49,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:49,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:14:49,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:14:49,803 INFO L87 Difference]: Start difference. First operand 4458 states and 6819 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:51,264 INFO L93 Difference]: Finished difference Result 19541 states and 29686 transitions. [2021-12-06 22:14:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:14:51,264 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 22:14:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:51,324 INFO L225 Difference]: With dead ends: 19541 [2021-12-06 22:14:51,324 INFO L226 Difference]: Without dead ends: 16827 [2021-12-06 22:14:51,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:14:51,330 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 2051 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:51,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 1096 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:14:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16827 states. [2021-12-06 22:14:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16827 to 4553. [2021-12-06 22:14:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 1.5259226713532512) internal successors, (6946), 4552 states have internal predecessors, (6946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6946 transitions. [2021-12-06 22:14:51,706 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6946 transitions. Word has length 67 [2021-12-06 22:14:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:51,706 INFO L470 AbstractCegarLoop]: Abstraction has 4553 states and 6946 transitions. [2021-12-06 22:14:51,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6946 transitions. [2021-12-06 22:14:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:14:51,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:51,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:51,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:14:51,708 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash -354598274, now seen corresponding path program 1 times [2021-12-06 22:14:51,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:51,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954636030] [2021-12-06 22:14:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:51,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:51,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:51,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954636030] [2021-12-06 22:14:51,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954636030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:51,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:51,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:14:51,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105614002] [2021-12-06 22:14:51,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:51,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:14:51,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:14:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:14:51,846 INFO L87 Difference]: Start difference. First operand 4553 states and 6946 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:53,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:53,363 INFO L93 Difference]: Finished difference Result 12008 states and 18213 transitions. [2021-12-06 22:14:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 22:14:53,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 22:14:53,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:53,380 INFO L225 Difference]: With dead ends: 12008 [2021-12-06 22:14:53,380 INFO L226 Difference]: Without dead ends: 11349 [2021-12-06 22:14:53,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:14:53,384 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 1910 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:53,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 1252 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:14:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2021-12-06 22:14:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 4553. [2021-12-06 22:14:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4552 states have (on average 1.5254833040421794) internal successors, (6944), 4552 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6944 transitions. [2021-12-06 22:14:53,730 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6944 transitions. Word has length 67 [2021-12-06 22:14:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:53,731 INFO L470 AbstractCegarLoop]: Abstraction has 4553 states and 6944 transitions. [2021-12-06 22:14:53,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:53,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6944 transitions. [2021-12-06 22:14:53,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:14:53,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:53,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:53,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:14:53,733 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:53,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash 878399134, now seen corresponding path program 1 times [2021-12-06 22:14:53,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:53,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291201500] [2021-12-06 22:14:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:53,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:53,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291201500] [2021-12-06 22:14:53,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291201500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:53,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:53,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:14:53,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937043984] [2021-12-06 22:14:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:53,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:14:53,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:14:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:14:53,851 INFO L87 Difference]: Start difference. First operand 4553 states and 6944 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:55,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:55,695 INFO L93 Difference]: Finished difference Result 15862 states and 24064 transitions. [2021-12-06 22:14:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:14:55,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 22:14:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:55,716 INFO L225 Difference]: With dead ends: 15862 [2021-12-06 22:14:55,716 INFO L226 Difference]: Without dead ends: 14192 [2021-12-06 22:14:55,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:14:55,721 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 2094 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:55,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2094 Valid, 1200 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:14:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14192 states. [2021-12-06 22:14:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14192 to 4694. [2021-12-06 22:14:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4693 states have (on average 1.5201363733219688) internal successors, (7134), 4693 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7134 transitions. [2021-12-06 22:14:56,139 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7134 transitions. Word has length 67 [2021-12-06 22:14:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:56,139 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 7134 transitions. [2021-12-06 22:14:56,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7134 transitions. [2021-12-06 22:14:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:14:56,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:56,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:56,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:14:56,141 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:56,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1495323364, now seen corresponding path program 1 times [2021-12-06 22:14:56,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:56,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439191336] [2021-12-06 22:14:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:56,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:56,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:56,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439191336] [2021-12-06 22:14:56,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439191336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:56,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:56,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:14:56,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888017556] [2021-12-06 22:14:56,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:56,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:14:56,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:14:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:56,177 INFO L87 Difference]: Start difference. First operand 4694 states and 7134 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:56,988 INFO L93 Difference]: Finished difference Result 12742 states and 19425 transitions. [2021-12-06 22:14:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:14:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-06 22:14:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:57,004 INFO L225 Difference]: With dead ends: 12742 [2021-12-06 22:14:57,004 INFO L226 Difference]: Without dead ends: 8096 [2021-12-06 22:14:57,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:14:57,011 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 957 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:57,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 240 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:14:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2021-12-06 22:14:57,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 8094. [2021-12-06 22:14:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8094 states, 8093 states have (on average 1.517237118497467) internal successors, (12279), 8093 states have internal predecessors, (12279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8094 states to 8094 states and 12279 transitions. [2021-12-06 22:14:57,652 INFO L78 Accepts]: Start accepts. Automaton has 8094 states and 12279 transitions. Word has length 67 [2021-12-06 22:14:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:57,652 INFO L470 AbstractCegarLoop]: Abstraction has 8094 states and 12279 transitions. [2021-12-06 22:14:57,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8094 states and 12279 transitions. [2021-12-06 22:14:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:14:57,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:57,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:57,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:14:57,655 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1249029969, now seen corresponding path program 1 times [2021-12-06 22:14:57,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:57,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076725139] [2021-12-06 22:14:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:57,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:14:57,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:57,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076725139] [2021-12-06 22:14:57,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076725139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:57,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:57,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:14:57,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193471446] [2021-12-06 22:14:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:57,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:14:57,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:14:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:14:57,708 INFO L87 Difference]: Start difference. First operand 8094 states and 12279 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:14:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:58,952 INFO L93 Difference]: Finished difference Result 21234 states and 32297 transitions. [2021-12-06 22:14:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:14:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-06 22:14:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:58,971 INFO L225 Difference]: With dead ends: 21234 [2021-12-06 22:14:58,971 INFO L226 Difference]: Without dead ends: 14064 [2021-12-06 22:14:58,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:14:58,978 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 158 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:58,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 571 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:14:58,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14064 states. [2021-12-06 22:15:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14064 to 13958. [2021-12-06 22:15:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13958 states, 13957 states have (on average 1.5034033101669413) internal successors, (20983), 13957 states have internal predecessors, (20983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13958 states to 13958 states and 20983 transitions. [2021-12-06 22:15:00,170 INFO L78 Accepts]: Start accepts. Automaton has 13958 states and 20983 transitions. Word has length 68 [2021-12-06 22:15:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:00,170 INFO L470 AbstractCegarLoop]: Abstraction has 13958 states and 20983 transitions. [2021-12-06 22:15:00,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 13958 states and 20983 transitions. [2021-12-06 22:15:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:15:00,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:00,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:00,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:15:00,173 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:00,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:00,174 INFO L85 PathProgramCache]: Analyzing trace with hash -264834943, now seen corresponding path program 1 times [2021-12-06 22:15:00,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:00,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519279172] [2021-12-06 22:15:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:00,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:00,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:00,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519279172] [2021-12-06 22:15:00,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519279172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:00,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:00,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:15:00,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845545635] [2021-12-06 22:15:00,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:00,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:15:00,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:15:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:15:00,201 INFO L87 Difference]: Start difference. First operand 13958 states and 20983 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:01,760 INFO L93 Difference]: Finished difference Result 25362 states and 38160 transitions. [2021-12-06 22:15:01,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:15:01,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-06 22:15:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:01,776 INFO L225 Difference]: With dead ends: 25362 [2021-12-06 22:15:01,776 INFO L226 Difference]: Without dead ends: 17036 [2021-12-06 22:15:01,783 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 [2021-12-06 22:15:01,783 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 148 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:01,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 454 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17036 states. [2021-12-06 22:15:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17036 to 16818. [2021-12-06 22:15:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16818 states, 16817 states have (on average 1.4811202949396445) internal successors, (24908), 16817 states have internal predecessors, (24908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16818 states to 16818 states and 24908 transitions. [2021-12-06 22:15:03,398 INFO L78 Accepts]: Start accepts. Automaton has 16818 states and 24908 transitions. Word has length 68 [2021-12-06 22:15:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:03,398 INFO L470 AbstractCegarLoop]: Abstraction has 16818 states and 24908 transitions. [2021-12-06 22:15:03,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:03,398 INFO L276 IsEmpty]: Start isEmpty. Operand 16818 states and 24908 transitions. [2021-12-06 22:15:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:15:03,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:03,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:03,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:15:03,401 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:03,401 INFO L85 PathProgramCache]: Analyzing trace with hash -660438559, now seen corresponding path program 1 times [2021-12-06 22:15:03,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:03,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414097524] [2021-12-06 22:15:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:03,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:03,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:03,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414097524] [2021-12-06 22:15:03,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414097524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:03,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:03,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:15:03,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712374598] [2021-12-06 22:15:03,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:03,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:15:03,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:03,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:15:03,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:15:03,432 INFO L87 Difference]: Start difference. First operand 16818 states and 24908 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:05,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:05,547 INFO L93 Difference]: Finished difference Result 37671 states and 55842 transitions. [2021-12-06 22:15:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:15:05,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-06 22:15:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:05,570 INFO L225 Difference]: With dead ends: 37671 [2021-12-06 22:15:05,570 INFO L226 Difference]: Without dead ends: 23115 [2021-12-06 22:15:05,584 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 [2021-12-06 22:15:05,584 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 163 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:05,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:05,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23115 states. [2021-12-06 22:15:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23115 to 16687. [2021-12-06 22:15:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16687 states, 16686 states have (on average 1.4625434495984657) internal successors, (24404), 16686 states have internal predecessors, (24404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16687 states to 16687 states and 24404 transitions. [2021-12-06 22:15:07,292 INFO L78 Accepts]: Start accepts. Automaton has 16687 states and 24404 transitions. Word has length 68 [2021-12-06 22:15:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:07,293 INFO L470 AbstractCegarLoop]: Abstraction has 16687 states and 24404 transitions. [2021-12-06 22:15:07,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 16687 states and 24404 transitions. [2021-12-06 22:15:07,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:15:07,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:07,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:07,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:15:07,296 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1777284032, now seen corresponding path program 1 times [2021-12-06 22:15:07,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:07,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283673635] [2021-12-06 22:15:07,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:07,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:07,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:07,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283673635] [2021-12-06 22:15:07,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283673635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:07,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:07,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:15:07,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415127277] [2021-12-06 22:15:07,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:07,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:15:07,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:15:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:15:07,325 INFO L87 Difference]: Start difference. First operand 16687 states and 24404 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:09,010 INFO L93 Difference]: Finished difference Result 22883 states and 33321 transitions. [2021-12-06 22:15:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:15:09,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-06 22:15:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:09,027 INFO L225 Difference]: With dead ends: 22883 [2021-12-06 22:15:09,027 INFO L226 Difference]: Without dead ends: 17041 [2021-12-06 22:15:09,034 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 [2021-12-06 22:15:09,035 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 135 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:09,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 436 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:09,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17041 states. [2021-12-06 22:15:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17041 to 15375. [2021-12-06 22:15:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15375 states, 15374 states have (on average 1.432548458436321) internal successors, (22024), 15374 states have internal predecessors, (22024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15375 states to 15375 states and 22024 transitions. [2021-12-06 22:15:10,590 INFO L78 Accepts]: Start accepts. Automaton has 15375 states and 22024 transitions. Word has length 68 [2021-12-06 22:15:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:10,590 INFO L470 AbstractCegarLoop]: Abstraction has 15375 states and 22024 transitions. [2021-12-06 22:15:10,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 15375 states and 22024 transitions. [2021-12-06 22:15:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:15:10,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:10,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:10,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:15:10,592 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:10,593 INFO L85 PathProgramCache]: Analyzing trace with hash -450188991, now seen corresponding path program 1 times [2021-12-06 22:15:10,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:10,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806890780] [2021-12-06 22:15:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:10,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:10,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806890780] [2021-12-06 22:15:10,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806890780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:10,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:10,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:15:10,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916632300] [2021-12-06 22:15:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:10,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:15:10,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:10,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:15:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:15:10,635 INFO L87 Difference]: Start difference. First operand 15375 states and 22024 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:13,516 INFO L93 Difference]: Finished difference Result 32728 states and 47289 transitions. [2021-12-06 22:15:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:15:13,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 22:15:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:13,548 INFO L225 Difference]: With dead ends: 32728 [2021-12-06 22:15:13,548 INFO L226 Difference]: Without dead ends: 26334 [2021-12-06 22:15:13,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:15:13,559 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1033 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:13,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 1070 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26334 states. [2021-12-06 22:15:15,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26334 to 21734. [2021-12-06 22:15:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21734 states, 21733 states have (on average 1.4334882436847192) internal successors, (31154), 21733 states have internal predecessors, (31154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21734 states to 21734 states and 31154 transitions. [2021-12-06 22:15:15,890 INFO L78 Accepts]: Start accepts. Automaton has 21734 states and 31154 transitions. Word has length 69 [2021-12-06 22:15:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:15,890 INFO L470 AbstractCegarLoop]: Abstraction has 21734 states and 31154 transitions. [2021-12-06 22:15:15,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21734 states and 31154 transitions. [2021-12-06 22:15:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:15:15,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:15,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:15,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:15:15,893 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash 558054915, now seen corresponding path program 1 times [2021-12-06 22:15:15,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:15,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284318078] [2021-12-06 22:15:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:15,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:15,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:15,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284318078] [2021-12-06 22:15:15,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284318078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:15,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:15,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:15:15,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89135103] [2021-12-06 22:15:15,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:15,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:15:15,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:15,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:15:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:15:15,936 INFO L87 Difference]: Start difference. First operand 21734 states and 31154 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:18,992 INFO L93 Difference]: Finished difference Result 30900 states and 44495 transitions. [2021-12-06 22:15:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:15:18,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 22:15:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:19,025 INFO L225 Difference]: With dead ends: 30900 [2021-12-06 22:15:19,025 INFO L226 Difference]: Without dead ends: 29482 [2021-12-06 22:15:19,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:15:19,034 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1052 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:19,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 1107 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29482 states. [2021-12-06 22:15:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29482 to 23136. [2021-12-06 22:15:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23136 states, 23135 states have (on average 1.4337583747568619) internal successors, (33170), 23135 states have internal predecessors, (33170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23136 states to 23136 states and 33170 transitions. [2021-12-06 22:15:21,566 INFO L78 Accepts]: Start accepts. Automaton has 23136 states and 33170 transitions. Word has length 69 [2021-12-06 22:15:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:21,566 INFO L470 AbstractCegarLoop]: Abstraction has 23136 states and 33170 transitions. [2021-12-06 22:15:21,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 23136 states and 33170 transitions. [2021-12-06 22:15:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:15:21,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:21,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:21,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:15:21,569 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 362024722, now seen corresponding path program 1 times [2021-12-06 22:15:21,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:21,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979768771] [2021-12-06 22:15:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:21,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:21,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:21,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979768771] [2021-12-06 22:15:21,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979768771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:21,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:21,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:15:21,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112871163] [2021-12-06 22:15:21,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:21,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:15:21,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:15:21,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:15:21,618 INFO L87 Difference]: Start difference. First operand 23136 states and 33170 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:24,937 INFO L93 Difference]: Finished difference Result 33992 states and 48977 transitions. [2021-12-06 22:15:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:15:24,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 22:15:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:24,971 INFO L225 Difference]: With dead ends: 33992 [2021-12-06 22:15:24,971 INFO L226 Difference]: Without dead ends: 30846 [2021-12-06 22:15:24,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:15:24,979 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 963 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:24,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 1284 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30846 states. [2021-12-06 22:15:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30846 to 26261. [2021-12-06 22:15:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26261 states, 26260 states have (on average 1.4340822543792842) internal successors, (37659), 26260 states have internal predecessors, (37659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:27,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26261 states to 26261 states and 37659 transitions. [2021-12-06 22:15:27,957 INFO L78 Accepts]: Start accepts. Automaton has 26261 states and 37659 transitions. Word has length 69 [2021-12-06 22:15:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:27,957 INFO L470 AbstractCegarLoop]: Abstraction has 26261 states and 37659 transitions. [2021-12-06 22:15:27,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 26261 states and 37659 transitions. [2021-12-06 22:15:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:15:27,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:27,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:27,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:15:27,961 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1608289607, now seen corresponding path program 1 times [2021-12-06 22:15:27,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:27,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213914859] [2021-12-06 22:15:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:27,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:28,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:28,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213914859] [2021-12-06 22:15:28,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213914859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:28,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:28,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:15:28,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523598453] [2021-12-06 22:15:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:28,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:15:28,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:15:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:15:28,004 INFO L87 Difference]: Start difference. First operand 26261 states and 37659 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:32,291 INFO L93 Difference]: Finished difference Result 44439 states and 64123 transitions. [2021-12-06 22:15:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:15:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 22:15:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:32,335 INFO L225 Difference]: With dead ends: 44439 [2021-12-06 22:15:32,335 INFO L226 Difference]: Without dead ends: 37189 [2021-12-06 22:15:32,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:15:32,345 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 1038 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:32,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1038 Valid, 1247 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37189 states. [2021-12-06 22:15:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37189 to 31796. [2021-12-06 22:15:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31796 states, 31795 states have (on average 1.434596634690989) internal successors, (45613), 31795 states have internal predecessors, (45613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31796 states to 31796 states and 45613 transitions. [2021-12-06 22:15:35,974 INFO L78 Accepts]: Start accepts. Automaton has 31796 states and 45613 transitions. Word has length 69 [2021-12-06 22:15:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:35,974 INFO L470 AbstractCegarLoop]: Abstraction has 31796 states and 45613 transitions. [2021-12-06 22:15:35,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31796 states and 45613 transitions. [2021-12-06 22:15:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 22:15:35,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:35,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:35,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:15:35,978 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash 534789540, now seen corresponding path program 1 times [2021-12-06 22:15:35,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:35,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343926935] [2021-12-06 22:15:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:35,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:36,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:36,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343926935] [2021-12-06 22:15:36,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343926935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:36,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:36,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:15:36,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643446544] [2021-12-06 22:15:36,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:36,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:15:36,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:15:36,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:15:36,004 INFO L87 Difference]: Start difference. First operand 31796 states and 45613 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:40,138 INFO L93 Difference]: Finished difference Result 64005 states and 91471 transitions. [2021-12-06 22:15:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:15:40,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-12-06 22:15:40,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:40,181 INFO L225 Difference]: With dead ends: 64005 [2021-12-06 22:15:40,181 INFO L226 Difference]: Without dead ends: 34689 [2021-12-06 22:15:40,203 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 [2021-12-06 22:15:40,204 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 150 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:40,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 522 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:15:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34689 states. [2021-12-06 22:15:44,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34689 to 31691. [2021-12-06 22:15:44,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31691 states, 31690 states have (on average 1.3971284316819186) internal successors, (44275), 31690 states have internal predecessors, (44275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31691 states to 31691 states and 44275 transitions. [2021-12-06 22:15:44,192 INFO L78 Accepts]: Start accepts. Automaton has 31691 states and 44275 transitions. Word has length 72 [2021-12-06 22:15:44,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:44,192 INFO L470 AbstractCegarLoop]: Abstraction has 31691 states and 44275 transitions. [2021-12-06 22:15:44,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:15:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 31691 states and 44275 transitions. [2021-12-06 22:15:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:15:44,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:44,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:44,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:15:44,196 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:44,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1186485623, now seen corresponding path program 1 times [2021-12-06 22:15:44,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:44,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5024548] [2021-12-06 22:15:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:44,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:15:44,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:44,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5024548] [2021-12-06 22:15:44,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5024548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:44,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:44,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:15:44,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157988028] [2021-12-06 22:15:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:44,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:15:44,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:44,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:15:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:15:44,238 INFO L87 Difference]: Start difference. First operand 31691 states and 44275 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:01,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:01,205 INFO L93 Difference]: Finished difference Result 139206 states and 194626 transitions. [2021-12-06 22:16:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:16:01,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-06 22:16:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:01,394 INFO L225 Difference]: With dead ends: 139206 [2021-12-06 22:16:01,395 INFO L226 Difference]: Without dead ends: 128976 [2021-12-06 22:16:01,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:01,420 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 3346 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:01,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3346 Valid, 455 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:16:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128976 states. [2021-12-06 22:16:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128976 to 31715. [2021-12-06 22:16:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31715 states, 31714 states have (on average 1.3970801538752602) internal successors, (44307), 31714 states have internal predecessors, (44307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31715 states to 31715 states and 44307 transitions. [2021-12-06 22:16:06,494 INFO L78 Accepts]: Start accepts. Automaton has 31715 states and 44307 transitions. Word has length 74 [2021-12-06 22:16:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:06,495 INFO L470 AbstractCegarLoop]: Abstraction has 31715 states and 44307 transitions. [2021-12-06 22:16:06,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31715 states and 44307 transitions. [2021-12-06 22:16:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:16:06,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:06,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:06,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:16:06,499 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1221801007, now seen corresponding path program 1 times [2021-12-06 22:16:06,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:06,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074647330] [2021-12-06 22:16:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:06,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:16:06,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:06,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074647330] [2021-12-06 22:16:06,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074647330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:06,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:06,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:16:06,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042757873] [2021-12-06 22:16:06,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:06,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:16:06,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:16:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:16:06,555 INFO L87 Difference]: Start difference. First operand 31715 states and 44307 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:26,053 INFO L93 Difference]: Finished difference Result 136335 states and 188621 transitions. [2021-12-06 22:16:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:16:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-06 22:16:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:26,237 INFO L225 Difference]: With dead ends: 136335 [2021-12-06 22:16:26,237 INFO L226 Difference]: Without dead ends: 124699 [2021-12-06 22:16:26,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:26,264 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 2142 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:26,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2142 Valid, 550 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:16:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124699 states. [2021-12-06 22:16:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124699 to 31879. [2021-12-06 22:16:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31879 states, 31878 states have (on average 1.396229374490244) internal successors, (44509), 31878 states have internal predecessors, (44509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31879 states to 31879 states and 44509 transitions. [2021-12-06 22:16:31,670 INFO L78 Accepts]: Start accepts. Automaton has 31879 states and 44509 transitions. Word has length 74 [2021-12-06 22:16:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:31,670 INFO L470 AbstractCegarLoop]: Abstraction has 31879 states and 44509 transitions. [2021-12-06 22:16:31,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 31879 states and 44509 transitions. [2021-12-06 22:16:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:16:31,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:31,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:31,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:16:31,675 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash 64576706, now seen corresponding path program 1 times [2021-12-06 22:16:31,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:31,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542591287] [2021-12-06 22:16:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:31,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:16:31,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:31,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542591287] [2021-12-06 22:16:31,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542591287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:31,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:31,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:16:31,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385688150] [2021-12-06 22:16:31,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:31,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:16:31,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:31,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:16:31,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:16:31,719 INFO L87 Difference]: Start difference. First operand 31879 states and 44509 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:49,914 INFO L93 Difference]: Finished difference Result 115624 states and 159468 transitions. [2021-12-06 22:16:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:16:49,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-06 22:16:49,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:50,130 INFO L225 Difference]: With dead ends: 115624 [2021-12-06 22:16:50,130 INFO L226 Difference]: Without dead ends: 109773 [2021-12-06 22:16:50,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:50,150 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 2148 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2148 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:50,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2148 Valid, 472 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:16:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109773 states. [2021-12-06 22:16:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109773 to 32140. [2021-12-06 22:16:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32140 states, 32139 states have (on average 1.3945673480817697) internal successors, (44820), 32139 states have internal predecessors, (44820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:55,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32140 states to 32140 states and 44820 transitions. [2021-12-06 22:16:55,880 INFO L78 Accepts]: Start accepts. Automaton has 32140 states and 44820 transitions. Word has length 74 [2021-12-06 22:16:55,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:55,881 INFO L470 AbstractCegarLoop]: Abstraction has 32140 states and 44820 transitions. [2021-12-06 22:16:55,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:16:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 32140 states and 44820 transitions. [2021-12-06 22:16:55,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 22:16:55,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:55,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:55,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:16:55,886 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:55,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:55,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1759632225, now seen corresponding path program 1 times [2021-12-06 22:16:55,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:55,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613035109] [2021-12-06 22:16:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:55,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:16:55,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613035109] [2021-12-06 22:16:55,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613035109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:55,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:55,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:16:55,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454807033] [2021-12-06 22:16:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:55,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:16:55,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:16:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:16:55,926 INFO L87 Difference]: Start difference. First operand 32140 states and 44820 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:17:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:12,381 INFO L93 Difference]: Finished difference Result 114308 states and 158494 transitions. [2021-12-06 22:17:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:17:12,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-06 22:17:12,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:12,503 INFO L225 Difference]: With dead ends: 114308 [2021-12-06 22:17:12,504 INFO L226 Difference]: Without dead ends: 93223 [2021-12-06 22:17:12,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:17:12,525 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 2020 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:12,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2020 Valid, 425 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:17:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93223 states. [2021-12-06 22:17:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93223 to 32190. [2021-12-06 22:17:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32190 states, 32189 states have (on average 1.3942651216254) internal successors, (44880), 32189 states have internal predecessors, (44880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:17:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32190 states to 32190 states and 44880 transitions. [2021-12-06 22:17:18,532 INFO L78 Accepts]: Start accepts. Automaton has 32190 states and 44880 transitions. Word has length 75 [2021-12-06 22:17:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:18,532 INFO L470 AbstractCegarLoop]: Abstraction has 32190 states and 44880 transitions. [2021-12-06 22:17:18,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:17:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 32190 states and 44880 transitions. [2021-12-06 22:17:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 22:17:18,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:18,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:17:18,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:17:18,538 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1742464187, now seen corresponding path program 1 times [2021-12-06 22:17:18,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:18,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820930948] [2021-12-06 22:17:18,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:18,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:18,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:18,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820930948] [2021-12-06 22:17:18,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820930948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:18,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:18,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:17:18,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319649995] [2021-12-06 22:17:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:18,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:17:18,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:18,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:17:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:17:18,805 INFO L87 Difference]: Start difference. First operand 32190 states and 44880 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:17:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:36,505 INFO L93 Difference]: Finished difference Result 87066 states and 121454 transitions. [2021-12-06 22:17:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:17:36,506 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-06 22:17:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:36,614 INFO L225 Difference]: With dead ends: 87066 [2021-12-06 22:17:36,615 INFO L226 Difference]: Without dead ends: 83262 [2021-12-06 22:17:36,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:17:36,633 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 2207 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2207 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:36,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2207 Valid, 3037 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:17:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83262 states. [2021-12-06 22:17:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83262 to 32206. [2021-12-06 22:17:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32206 states, 32205 states have (on average 1.3937897841950009) internal successors, (44887), 32205 states have internal predecessors, (44887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:17:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32206 states to 32206 states and 44887 transitions. [2021-12-06 22:17:43,575 INFO L78 Accepts]: Start accepts. Automaton has 32206 states and 44887 transitions. Word has length 76 [2021-12-06 22:17:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:43,575 INFO L470 AbstractCegarLoop]: Abstraction has 32206 states and 44887 transitions. [2021-12-06 22:17:43,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:17:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 32206 states and 44887 transitions. [2021-12-06 22:17:43,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 22:17:43,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:43,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:17:43,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:17:43,581 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:43,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 186689387, now seen corresponding path program 1 times [2021-12-06 22:17:43,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:43,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894484045] [2021-12-06 22:17:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:43,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:43,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:43,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894484045] [2021-12-06 22:17:43,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894484045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:43,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:43,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:17:43,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078834180] [2021-12-06 22:17:43,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:43,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:17:43,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:17:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:17:43,831 INFO L87 Difference]: Start difference. First operand 32206 states and 44887 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:18,472 INFO L93 Difference]: Finished difference Result 157407 states and 220169 transitions. [2021-12-06 22:18:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:18:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 22:18:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:18,690 INFO L225 Difference]: With dead ends: 157407 [2021-12-06 22:18:18,690 INFO L226 Difference]: Without dead ends: 144504 [2021-12-06 22:18:18,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:18:18,724 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 2440 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:18,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 3209 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:18:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144504 states. [2021-12-06 22:18:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144504 to 32021. [2021-12-06 22:18:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32021 states, 32020 states have (on average 1.3944722048719551) internal successors, (44651), 32020 states have internal predecessors, (44651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32021 states to 32021 states and 44651 transitions. [2021-12-06 22:18:27,772 INFO L78 Accepts]: Start accepts. Automaton has 32021 states and 44651 transitions. Word has length 77 [2021-12-06 22:18:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:27,772 INFO L470 AbstractCegarLoop]: Abstraction has 32021 states and 44651 transitions. [2021-12-06 22:18:27,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 32021 states and 44651 transitions. [2021-12-06 22:18:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 22:18:27,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:27,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:27,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 22:18:27,778 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:27,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:27,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1944918895, now seen corresponding path program 1 times [2021-12-06 22:18:27,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:27,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495195717] [2021-12-06 22:18:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:27,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:18:27,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:27,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495195717] [2021-12-06 22:18:27,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495195717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:27,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:18:27,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:18:27,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271187696] [2021-12-06 22:18:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:27,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:18:27,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:18:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:18:27,801 INFO L87 Difference]: Start difference. First operand 32021 states and 44651 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:39,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:18:39,346 INFO L93 Difference]: Finished difference Result 67270 states and 93924 transitions. [2021-12-06 22:18:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:18:39,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-06 22:18:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:18:39,399 INFO L225 Difference]: With dead ends: 67270 [2021-12-06 22:18:39,399 INFO L226 Difference]: Without dead ends: 45766 [2021-12-06 22:18:39,417 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 [2021-12-06 22:18:39,418 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 174 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:18:39,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 407 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:18:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45766 states. [2021-12-06 22:18:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45766 to 45596. [2021-12-06 22:18:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45596 states, 45595 states have (on average 1.3984428117118104) internal successors, (63762), 45595 states have internal predecessors, (63762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45596 states to 45596 states and 63762 transitions. [2021-12-06 22:18:51,191 INFO L78 Accepts]: Start accepts. Automaton has 45596 states and 63762 transitions. Word has length 77 [2021-12-06 22:18:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:51,191 INFO L470 AbstractCegarLoop]: Abstraction has 45596 states and 63762 transitions. [2021-12-06 22:18:51,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:18:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 45596 states and 63762 transitions. [2021-12-06 22:18:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 22:18:51,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:51,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:18:51,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 22:18:51,198 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:51,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash 101278650, now seen corresponding path program 1 times [2021-12-06 22:18:51,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389877681] [2021-12-06 22:18:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:51,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:18:51,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:51,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389877681] [2021-12-06 22:18:51,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389877681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:18:51,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:18:51,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:18:51,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152044060] [2021-12-06 22:18:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:18:51,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:18:51,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:18:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:18:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:18:51,295 INFO L87 Difference]: Start difference. First operand 45596 states and 63762 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:19:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:29,308 INFO L93 Difference]: Finished difference Result 181335 states and 253135 transitions. [2021-12-06 22:19:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:19:29,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-06 22:19:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:29,510 INFO L225 Difference]: With dead ends: 181335 [2021-12-06 22:19:29,510 INFO L226 Difference]: Without dead ends: 136654 [2021-12-06 22:19:29,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:19:29,553 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 1644 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:29,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 2000 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 22:19:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136654 states. [2021-12-06 22:19:42,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136654 to 45397. [2021-12-06 22:19:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45397 states, 45396 states have (on average 1.398691514670896) internal successors, (63495), 45396 states have internal predecessors, (63495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:19:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45397 states to 45397 states and 63495 transitions. [2021-12-06 22:19:42,596 INFO L78 Accepts]: Start accepts. Automaton has 45397 states and 63495 transitions. Word has length 80 [2021-12-06 22:19:42,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:19:42,596 INFO L470 AbstractCegarLoop]: Abstraction has 45397 states and 63495 transitions. [2021-12-06 22:19:42,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:19:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 45397 states and 63495 transitions. [2021-12-06 22:19:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 22:19:42,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:19:42,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:19:42,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 22:19:42,603 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:19:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:19:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1600732747, now seen corresponding path program 1 times [2021-12-06 22:19:42,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:19:42,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829124752] [2021-12-06 22:19:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:19:42,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:19:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:19:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:19:42,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:19:42,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829124752] [2021-12-06 22:19:42,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829124752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:19:42,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:19:42,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:19:42,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721297804] [2021-12-06 22:19:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:19:42,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:19:42,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:19:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:19:42,627 INFO L87 Difference]: Start difference. First operand 45397 states and 63495 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:19:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:19:53,730 INFO L93 Difference]: Finished difference Result 66467 states and 92763 transitions. [2021-12-06 22:19:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:19:53,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-06 22:19:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:19:53,779 INFO L225 Difference]: With dead ends: 66467 [2021-12-06 22:19:53,779 INFO L226 Difference]: Without dead ends: 40545 [2021-12-06 22:19:53,798 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 [2021-12-06 22:19:53,799 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 143 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:19:53,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 487 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:19:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40545 states. [2021-12-06 22:20:04,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40545 to 40543. [2021-12-06 22:20:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40543 states, 40542 states have (on average 1.381801588476148) internal successors, (56021), 40542 states have internal predecessors, (56021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:20:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40543 states to 40543 states and 56021 transitions. [2021-12-06 22:20:05,025 INFO L78 Accepts]: Start accepts. Automaton has 40543 states and 56021 transitions. Word has length 81 [2021-12-06 22:20:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:20:05,025 INFO L470 AbstractCegarLoop]: Abstraction has 40543 states and 56021 transitions. [2021-12-06 22:20:05,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:20:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 40543 states and 56021 transitions. [2021-12-06 22:20:05,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 22:20:05,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:20:05,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:20:05,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 22:20:05,032 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:20:05,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:20:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1688072129, now seen corresponding path program 1 times [2021-12-06 22:20:05,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:20:05,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569947119] [2021-12-06 22:20:05,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:20:05,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:20:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:20:05,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:20:05,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569947119] [2021-12-06 22:20:05,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569947119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:20:05,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:20:05,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:20:05,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512075397] [2021-12-06 22:20:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:20:05,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:20:05,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:20:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:20:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:20:05,260 INFO L87 Difference]: Start difference. First operand 40543 states and 56021 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:20:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:20:36,330 INFO L93 Difference]: Finished difference Result 105941 states and 146334 transitions. [2021-12-06 22:20:36,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:20:36,331 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-06 22:20:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:20:36,474 INFO L225 Difference]: With dead ends: 105941 [2021-12-06 22:20:36,475 INFO L226 Difference]: Without dead ends: 101079 [2021-12-06 22:20:36,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-12-06 22:20:36,498 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 2716 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:20:36,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 3172 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:20:36,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101079 states. [2021-12-06 22:20:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101079 to 40507. [2021-12-06 22:20:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40507 states, 40506 states have (on average 1.3819187280896656) internal successors, (55976), 40506 states have internal predecessors, (55976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:20:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40507 states to 40507 states and 55976 transitions. [2021-12-06 22:20:49,156 INFO L78 Accepts]: Start accepts. Automaton has 40507 states and 55976 transitions. Word has length 82 [2021-12-06 22:20:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:20:49,157 INFO L470 AbstractCegarLoop]: Abstraction has 40507 states and 55976 transitions. [2021-12-06 22:20:49,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:20:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 40507 states and 55976 transitions. [2021-12-06 22:20:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 22:20:49,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:20:49,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:20:49,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 22:20:49,163 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:20:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:20:49,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1800307277, now seen corresponding path program 1 times [2021-12-06 22:20:49,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:20:49,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551245076] [2021-12-06 22:20:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:20:49,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:20:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:20:49,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:20:49,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551245076] [2021-12-06 22:20:49,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551245076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:20:49,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:20:49,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:20:49,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306055885] [2021-12-06 22:20:49,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:20:49,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:20:49,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:20:49,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:20:49,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:20:49,184 INFO L87 Difference]: Start difference. First operand 40507 states and 55976 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:21:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:05,810 INFO L93 Difference]: Finished difference Result 79622 states and 110192 transitions. [2021-12-06 22:21:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:21:05,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-06 22:21:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:05,881 INFO L225 Difference]: With dead ends: 79622 [2021-12-06 22:21:05,882 INFO L226 Difference]: Without dead ends: 55397 [2021-12-06 22:21:05,902 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 [2021-12-06 22:21:05,903 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 174 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:05,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 346 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55397 states. [2021-12-06 22:21:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55397 to 39321. [2021-12-06 22:21:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39321 states, 39320 states have (on average 1.3802136317395728) internal successors, (54270), 39320 states have internal predecessors, (54270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:21:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39321 states to 39321 states and 54270 transitions. [2021-12-06 22:21:18,392 INFO L78 Accepts]: Start accepts. Automaton has 39321 states and 54270 transitions. Word has length 82 [2021-12-06 22:21:18,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:18,392 INFO L470 AbstractCegarLoop]: Abstraction has 39321 states and 54270 transitions. [2021-12-06 22:21:18,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:21:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 39321 states and 54270 transitions. [2021-12-06 22:21:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 22:21:18,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:18,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:18,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 22:21:18,402 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:18,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1641215798, now seen corresponding path program 1 times [2021-12-06 22:21:18,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:18,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536617231] [2021-12-06 22:21:18,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:18,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:18,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:18,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536617231] [2021-12-06 22:21:18,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536617231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:18,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:18,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:21:18,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388848182] [2021-12-06 22:21:18,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:18,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:21:18,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:18,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:21:18,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:21:18,431 INFO L87 Difference]: Start difference. First operand 39321 states and 54270 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:21:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:21:36,122 INFO L93 Difference]: Finished difference Result 78968 states and 109858 transitions. [2021-12-06 22:21:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:21:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-12-06 22:21:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:21:36,197 INFO L225 Difference]: With dead ends: 78968 [2021-12-06 22:21:36,197 INFO L226 Difference]: Without dead ends: 58169 [2021-12-06 22:21:36,216 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 [2021-12-06 22:21:36,216 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 115 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:21:36,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 488 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:21:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58169 states. [2021-12-06 22:21:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58169 to 56312. [2021-12-06 22:21:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56312 states, 56311 states have (on average 1.3791266360036227) internal successors, (77660), 56311 states have internal predecessors, (77660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:21:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56312 states to 56312 states and 77660 transitions. [2021-12-06 22:21:53,534 INFO L78 Accepts]: Start accepts. Automaton has 56312 states and 77660 transitions. Word has length 90 [2021-12-06 22:21:53,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:21:53,534 INFO L470 AbstractCegarLoop]: Abstraction has 56312 states and 77660 transitions. [2021-12-06 22:21:53,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:21:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 56312 states and 77660 transitions. [2021-12-06 22:21:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 22:21:53,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:21:53,541 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:21:53,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 22:21:53,542 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:21:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:21:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1379057684, now seen corresponding path program 1 times [2021-12-06 22:21:53,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:21:53,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934553344] [2021-12-06 22:21:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:21:53,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:21:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:21:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:21:53,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:21:53,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934553344] [2021-12-06 22:21:53,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934553344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:21:53,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:21:53,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:21:53,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633912021] [2021-12-06 22:21:53,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:21:53,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:21:53,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:21:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:21:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:21:53,583 INFO L87 Difference]: Start difference. First operand 56312 states and 77660 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:22:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:34,847 INFO L93 Difference]: Finished difference Result 147119 states and 202632 transitions. [2021-12-06 22:22:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:22:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-06 22:22:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:35,029 INFO L225 Difference]: With dead ends: 147119 [2021-12-06 22:22:35,029 INFO L226 Difference]: Without dead ends: 124616 [2021-12-06 22:22:35,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:22:35,068 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2462 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:35,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2462 Valid, 445 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:22:35,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124616 states. [2021-12-06 22:22:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124616 to 56824. [2021-12-06 22:22:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56824 states, 56823 states have (on average 1.3776287770797035) internal successors, (78281), 56823 states have internal predecessors, (78281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:22:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56824 states to 56824 states and 78281 transitions. [2021-12-06 22:22:53,384 INFO L78 Accepts]: Start accepts. Automaton has 56824 states and 78281 transitions. Word has length 95 [2021-12-06 22:22:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:53,385 INFO L470 AbstractCegarLoop]: Abstraction has 56824 states and 78281 transitions. [2021-12-06 22:22:53,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:22:53,385 INFO L276 IsEmpty]: Start isEmpty. Operand 56824 states and 78281 transitions. [2021-12-06 22:22:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 22:22:53,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:53,391 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:22:53,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 22:22:53,392 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:53,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash 256876660, now seen corresponding path program 1 times [2021-12-06 22:22:53,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:53,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031184807] [2021-12-06 22:22:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:53,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:22:53,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:53,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031184807] [2021-12-06 22:22:53,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031184807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:22:53,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:22:53,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:22:53,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353004277] [2021-12-06 22:22:53,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:22:53,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:22:53,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:22:53,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:22:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:22:53,420 INFO L87 Difference]: Start difference. First operand 56824 states and 78281 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:23:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:23:07,887 INFO L93 Difference]: Finished difference Result 71192 states and 97681 transitions. [2021-12-06 22:23:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:23:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-06 22:23:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:23:07,937 INFO L225 Difference]: With dead ends: 71192 [2021-12-06 22:23:07,937 INFO L226 Difference]: Without dead ends: 45376 [2021-12-06 22:23:07,955 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 [2021-12-06 22:23:07,955 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 142 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:23:07,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 571 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:23:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45376 states. [2021-12-06 22:23:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45376 to 45374. [2021-12-06 22:23:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45374 states, 45373 states have (on average 1.3575033610296872) internal successors, (61594), 45373 states have internal predecessors, (61594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:23:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45374 states to 45374 states and 61594 transitions. [2021-12-06 22:23:22,461 INFO L78 Accepts]: Start accepts. Automaton has 45374 states and 61594 transitions. Word has length 95 [2021-12-06 22:23:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:23:22,461 INFO L470 AbstractCegarLoop]: Abstraction has 45374 states and 61594 transitions. [2021-12-06 22:23:22,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:23:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand 45374 states and 61594 transitions. [2021-12-06 22:23:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 22:23:22,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:23:22,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:23:22,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 22:23:22,466 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:23:22,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:23:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash -628052237, now seen corresponding path program 1 times [2021-12-06 22:23:22,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:23:22,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112688102] [2021-12-06 22:23:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:23:22,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:23:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:23:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:23:22,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:23:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112688102] [2021-12-06 22:23:22,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112688102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:23:22,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:23:22,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:23:22,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338637426] [2021-12-06 22:23:22,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:23:22,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:23:22,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:23:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:23:22,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:23:22,505 INFO L87 Difference]: Start difference. First operand 45374 states and 61594 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:24:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:24:14,084 INFO L93 Difference]: Finished difference Result 186607 states and 253720 transitions. [2021-12-06 22:24:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:24:14,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-06 22:24:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:24:14,311 INFO L225 Difference]: With dead ends: 186607 [2021-12-06 22:24:14,311 INFO L226 Difference]: Without dead ends: 153242 [2021-12-06 22:24:14,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:24:14,358 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 2157 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:24:14,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2157 Valid, 456 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:24:14,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153242 states. [2021-12-06 22:24:35,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153242 to 63722. [2021-12-06 22:24:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63722 states, 63721 states have (on average 1.3747430203543574) internal successors, (87600), 63721 states have internal predecessors, (87600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:24:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63722 states to 63722 states and 87600 transitions. [2021-12-06 22:24:35,173 INFO L78 Accepts]: Start accepts. Automaton has 63722 states and 87600 transitions. Word has length 96 [2021-12-06 22:24:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:24:35,173 INFO L470 AbstractCegarLoop]: Abstraction has 63722 states and 87600 transitions. [2021-12-06 22:24:35,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:24:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 63722 states and 87600 transitions. [2021-12-06 22:24:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 22:24:35,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:24:35,178 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:24:35,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 22:24:35,179 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:24:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:24:35,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1827343764, now seen corresponding path program 1 times [2021-12-06 22:24:35,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:24:35,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162845767] [2021-12-06 22:24:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:24:35,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:24:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:24:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:24:35,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:24:35,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162845767] [2021-12-06 22:24:35,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162845767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:24:35,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:24:35,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:24:35,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823876182] [2021-12-06 22:24:35,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:24:35,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:24:35,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:24:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:24:35,219 INFO L87 Difference]: Start difference. First operand 63722 states and 87600 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:25:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:25:43,933 INFO L93 Difference]: Finished difference Result 238085 states and 327129 transitions. [2021-12-06 22:25:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:25:43,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-06 22:25:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:25:44,283 INFO L225 Difference]: With dead ends: 238085 [2021-12-06 22:25:44,284 INFO L226 Difference]: Without dead ends: 209614 [2021-12-06 22:25:44,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:25:44,340 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1892 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:25:44,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 442 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:25:44,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209614 states. [2021-12-06 22:26:14,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209614 to 94484. [2021-12-06 22:26:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94484 states, 94483 states have (on average 1.375422033593345) internal successors, (129954), 94483 states have internal predecessors, (129954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94484 states to 94484 states and 129954 transitions. [2021-12-06 22:26:14,823 INFO L78 Accepts]: Start accepts. Automaton has 94484 states and 129954 transitions. Word has length 98 [2021-12-06 22:26:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:26:14,823 INFO L470 AbstractCegarLoop]: Abstraction has 94484 states and 129954 transitions. [2021-12-06 22:26:14,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 94484 states and 129954 transitions. [2021-12-06 22:26:14,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 22:26:14,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:26:14,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:26:14,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 22:26:14,837 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:26:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:26:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash 57149073, now seen corresponding path program 1 times [2021-12-06 22:26:14,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:26:14,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535108767] [2021-12-06 22:26:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:26:14,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:26:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:26:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:26:14,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:26:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535108767] [2021-12-06 22:26:14,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535108767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:26:14,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:26:14,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:26:14,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054964899] [2021-12-06 22:26:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:26:14,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:26:14,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:26:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:26:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:26:14,874 INFO L87 Difference]: Start difference. First operand 94484 states and 129954 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:26:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:26:55,921 INFO L93 Difference]: Finished difference Result 226062 states and 309272 transitions. [2021-12-06 22:26:55,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:26:55,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-06 22:26:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:26:56,110 INFO L225 Difference]: With dead ends: 226062 [2021-12-06 22:26:56,111 INFO L226 Difference]: Without dead ends: 132808 [2021-12-06 22:26:56,159 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 [2021-12-06 22:26:56,160 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 108 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:26:56,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 475 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:26:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132808 states. [2021-12-06 22:27:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132808 to 127546. [2021-12-06 22:27:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127546 states, 127545 states have (on average 1.3565957113175742) internal successors, (173027), 127545 states have internal predecessors, (173027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127546 states to 127546 states and 173027 transitions. [2021-12-06 22:27:36,115 INFO L78 Accepts]: Start accepts. Automaton has 127546 states and 173027 transitions. Word has length 110 [2021-12-06 22:27:36,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:36,116 INFO L470 AbstractCegarLoop]: Abstraction has 127546 states and 173027 transitions. [2021-12-06 22:27:36,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:27:36,116 INFO L276 IsEmpty]: Start isEmpty. Operand 127546 states and 173027 transitions. [2021-12-06 22:27:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 22:27:36,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:36,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:36,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 22:27:36,132 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:36,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash -848560941, now seen corresponding path program 1 times [2021-12-06 22:27:36,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:36,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557005605] [2021-12-06 22:27:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:36,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:36,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 22:27:36,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:36,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557005605] [2021-12-06 22:27:36,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557005605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:36,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:36,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:27:36,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782081043] [2021-12-06 22:27:36,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:36,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:36,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:36,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:27:36,165 INFO L87 Difference]: Start difference. First operand 127546 states and 173027 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)