/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:15:13,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:15:13,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:15:13,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:15:13,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:15:13,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:15:13,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:15:13,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:15:13,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:15:13,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:15:13,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:15:13,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:15:13,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:15:13,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:15:13,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:15:13,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:15:13,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:15:13,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:15:13,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:15:13,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:15:13,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:15:13,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:15:13,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:15:13,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:15:13,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:15:13,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:15:13,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:15:13,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:15:13,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:15:13,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:15:13,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:15:13,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:15:13,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:15:13,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:15:13,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:15:13,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:15:13,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:15:13,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:15:13,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:15:13,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:15:13,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:15:13,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:15:13,855 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:15:13,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:15:13,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:15:13,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:15:13,857 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:15:13,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:15:13,857 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:15:13,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:15:13,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:15:13,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:15:13,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:15:13,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:15:13,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:15:13,858 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:15:13,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:15:13,859 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:15:13,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:15:13,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:15:13,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:15:13,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:15:13,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:15:13,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:15:13,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:15:13,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:15:13,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:15:13,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:15:13,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:15:13,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:15:13,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:15:14,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:15:14,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:15:14,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:15:14,163 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:15:14,163 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:15:14,164 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:15:14,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963f577ed/afc3d14fc8f74f5b91d98d9ace002b24/FLAGbcf77f6bb [2019-11-06 22:15:14,864 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:15:14,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:15:14,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963f577ed/afc3d14fc8f74f5b91d98d9ace002b24/FLAGbcf77f6bb [2019-11-06 22:15:15,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963f577ed/afc3d14fc8f74f5b91d98d9ace002b24 [2019-11-06 22:15:15,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:15:15,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:15:15,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:15:15,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:15:15,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:15:15,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:15" (1/1) ... [2019-11-06 22:15:15,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f6a27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:15, skipping insertion in model container [2019-11-06 22:15:15,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:15:15" (1/1) ... [2019-11-06 22:15:15,112 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:15:15,201 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:15:15,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:15:15,861 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:15:16,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:15:16,354 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:15:16,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16 WrapperNode [2019-11-06 22:15:16,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:15:16,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:15:16,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:15:16,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:15:16,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... [2019-11-06 22:15:16,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... [2019-11-06 22:15:16,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... [2019-11-06 22:15:16,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... [2019-11-06 22:15:16,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... [2019-11-06 22:15:16,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... [2019-11-06 22:15:16,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... [2019-11-06 22:15:16,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:15:16,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:15:16,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:15:16,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:15:16,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:15:16,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:15:16,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:15:16,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:15:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:15:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:15:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:15:16,608 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:15:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:15:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:15:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:15:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:15:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:15:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:15:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:15:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:15:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:15:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:15:16,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:15:18,361 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:15:18,364 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:15:18,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:18 BoogieIcfgContainer [2019-11-06 22:15:18,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:15:18,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:15:18,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:15:18,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:15:18,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:15:15" (1/3) ... [2019-11-06 22:15:18,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ad5db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:18, skipping insertion in model container [2019-11-06 22:15:18,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:15:16" (2/3) ... [2019-11-06 22:15:18,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ad5db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:15:18, skipping insertion in model container [2019-11-06 22:15:18,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:15:18" (3/3) ... [2019-11-06 22:15:18,383 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:15:18,396 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:15:18,419 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-06 22:15:18,434 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-06 22:15:18,479 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:15:18,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:15:18,480 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:15:18,480 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:15:18,480 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:15:18,480 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:15:18,481 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:15:18,481 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:15:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states. [2019-11-06 22:15:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-06 22:15:18,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:18,556 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:18,558 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:18,566 INFO L82 PathProgramCache]: Analyzing trace with hash 18427047, now seen corresponding path program 1 times [2019-11-06 22:15:18,575 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:18,575 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872364887] [2019-11-06 22:15:18,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:19,599 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:19,664 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872364887] [2019-11-06 22:15:19,665 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:19,665 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:19,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755334349] [2019-11-06 22:15:19,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:19,675 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:19,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:19,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:19,692 INFO L87 Difference]: Start difference. First operand 405 states. Second operand 4 states. [2019-11-06 22:15:20,121 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-11-06 22:15:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:22,801 INFO L93 Difference]: Finished difference Result 734 states and 1290 transitions. [2019-11-06 22:15:22,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:22,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-11-06 22:15:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:22,842 INFO L225 Difference]: With dead ends: 734 [2019-11-06 22:15:22,842 INFO L226 Difference]: Without dead ends: 573 [2019-11-06 22:15:22,850 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-11-06 22:15:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2019-11-06 22:15:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-06 22:15:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 834 transitions. [2019-11-06 22:15:23,012 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 834 transitions. Word has length 149 [2019-11-06 22:15:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:23,016 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 834 transitions. [2019-11-06 22:15:23,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 834 transitions. [2019-11-06 22:15:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-06 22:15:23,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:23,027 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:23,029 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:23,030 INFO L82 PathProgramCache]: Analyzing trace with hash 108834247, now seen corresponding path program 1 times [2019-11-06 22:15:23,030 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:23,030 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450914245] [2019-11-06 22:15:23,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:23,575 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:23,650 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450914245] [2019-11-06 22:15:23,650 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:23,651 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:23,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420293204] [2019-11-06 22:15:23,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:23,653 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:23,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:23,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:23,654 INFO L87 Difference]: Start difference. First operand 571 states and 834 transitions. Second operand 4 states. [2019-11-06 22:15:23,955 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-11-06 22:15:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:26,090 INFO L93 Difference]: Finished difference Result 1144 states and 1727 transitions. [2019-11-06 22:15:26,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:26,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-11-06 22:15:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:26,100 INFO L225 Difference]: With dead ends: 1144 [2019-11-06 22:15:26,100 INFO L226 Difference]: Without dead ends: 915 [2019-11-06 22:15:26,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2019-11-06 22:15:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 913. [2019-11-06 22:15:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-11-06 22:15:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1356 transitions. [2019-11-06 22:15:26,160 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1356 transitions. Word has length 149 [2019-11-06 22:15:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:26,161 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 1356 transitions. [2019-11-06 22:15:26,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1356 transitions. [2019-11-06 22:15:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-06 22:15:26,164 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:26,164 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:26,164 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:26,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1956442329, now seen corresponding path program 1 times [2019-11-06 22:15:26,165 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:26,165 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406253256] [2019-11-06 22:15:26,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:26,881 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:26,929 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406253256] [2019-11-06 22:15:26,929 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:26,929 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:26,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399584732] [2019-11-06 22:15:26,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:26,934 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:26,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:26,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:26,946 INFO L87 Difference]: Start difference. First operand 913 states and 1356 transitions. Second operand 5 states. [2019-11-06 22:15:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:29,979 INFO L93 Difference]: Finished difference Result 2677 states and 3967 transitions. [2019-11-06 22:15:29,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:29,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2019-11-06 22:15:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:29,989 INFO L225 Difference]: With dead ends: 2677 [2019-11-06 22:15:29,990 INFO L226 Difference]: Without dead ends: 1777 [2019-11-06 22:15:29,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2019-11-06 22:15:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1748. [2019-11-06 22:15:30,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2019-11-06 22:15:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2584 transitions. [2019-11-06 22:15:30,061 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2584 transitions. Word has length 149 [2019-11-06 22:15:30,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:30,062 INFO L462 AbstractCegarLoop]: Abstraction has 1748 states and 2584 transitions. [2019-11-06 22:15:30,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2584 transitions. [2019-11-06 22:15:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 22:15:30,065 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:30,065 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:30,066 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:30,066 INFO L82 PathProgramCache]: Analyzing trace with hash 970634365, now seen corresponding path program 1 times [2019-11-06 22:15:30,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:30,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490542040] [2019-11-06 22:15:30,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:30,371 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:30,411 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490542040] [2019-11-06 22:15:30,411 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:30,411 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:30,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322599856] [2019-11-06 22:15:30,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:30,412 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:30,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:30,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:30,413 INFO L87 Difference]: Start difference. First operand 1748 states and 2584 transitions. Second operand 4 states. [2019-11-06 22:15:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:33,619 INFO L93 Difference]: Finished difference Result 5198 states and 7682 transitions. [2019-11-06 22:15:33,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:33,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-11-06 22:15:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:33,637 INFO L225 Difference]: With dead ends: 5198 [2019-11-06 22:15:33,638 INFO L226 Difference]: Without dead ends: 3482 [2019-11-06 22:15:33,642 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:33,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2019-11-06 22:15:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 1750. [2019-11-06 22:15:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-11-06 22:15:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2586 transitions. [2019-11-06 22:15:33,730 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2586 transitions. Word has length 150 [2019-11-06 22:15:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:33,730 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2586 transitions. [2019-11-06 22:15:33,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2586 transitions. [2019-11-06 22:15:33,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-06 22:15:33,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:33,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:33,735 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:33,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1963532230, now seen corresponding path program 1 times [2019-11-06 22:15:33,735 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:33,737 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147300528] [2019-11-06 22:15:33,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:34,217 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:34,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147300528] [2019-11-06 22:15:34,257 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:34,257 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:34,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328111429] [2019-11-06 22:15:34,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:34,258 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:34,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:34,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:34,258 INFO L87 Difference]: Start difference. First operand 1750 states and 2586 transitions. Second operand 5 states. [2019-11-06 22:15:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:36,025 INFO L93 Difference]: Finished difference Result 3482 states and 5147 transitions. [2019-11-06 22:15:36,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:36,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-11-06 22:15:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:36,036 INFO L225 Difference]: With dead ends: 3482 [2019-11-06 22:15:36,036 INFO L226 Difference]: Without dead ends: 1750 [2019-11-06 22:15:36,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2019-11-06 22:15:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1749. [2019-11-06 22:15:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1749 states. [2019-11-06 22:15:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2583 transitions. [2019-11-06 22:15:36,104 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2583 transitions. Word has length 151 [2019-11-06 22:15:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:36,104 INFO L462 AbstractCegarLoop]: Abstraction has 1749 states and 2583 transitions. [2019-11-06 22:15:36,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2583 transitions. [2019-11-06 22:15:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-06 22:15:36,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:36,108 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:36,108 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:36,109 INFO L82 PathProgramCache]: Analyzing trace with hash 858257964, now seen corresponding path program 1 times [2019-11-06 22:15:36,109 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:36,109 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655272877] [2019-11-06 22:15:36,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:36,480 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:36,525 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655272877] [2019-11-06 22:15:36,525 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:36,525 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:36,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31266740] [2019-11-06 22:15:36,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:36,526 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:36,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:36,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:36,527 INFO L87 Difference]: Start difference. First operand 1749 states and 2583 transitions. Second operand 4 states. [2019-11-06 22:15:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:39,609 INFO L93 Difference]: Finished difference Result 4577 states and 6755 transitions. [2019-11-06 22:15:39,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:39,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-11-06 22:15:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:39,629 INFO L225 Difference]: With dead ends: 4577 [2019-11-06 22:15:39,629 INFO L226 Difference]: Without dead ends: 3026 [2019-11-06 22:15:39,633 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3026 states. [2019-11-06 22:15:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 2997. [2019-11-06 22:15:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2997 states. [2019-11-06 22:15:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2997 states to 2997 states and 4373 transitions. [2019-11-06 22:15:39,755 INFO L78 Accepts]: Start accepts. Automaton has 2997 states and 4373 transitions. Word has length 151 [2019-11-06 22:15:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:39,758 INFO L462 AbstractCegarLoop]: Abstraction has 2997 states and 4373 transitions. [2019-11-06 22:15:39,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 4373 transitions. [2019-11-06 22:15:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-11-06 22:15:39,764 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:39,764 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:39,764 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:39,765 INFO L82 PathProgramCache]: Analyzing trace with hash -649393937, now seen corresponding path program 1 times [2019-11-06 22:15:39,765 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:39,765 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485188807] [2019-11-06 22:15:39,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:40,187 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:40,226 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485188807] [2019-11-06 22:15:40,226 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:40,226 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:15:40,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091625585] [2019-11-06 22:15:40,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:15:40,227 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:40,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:15:40,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:15:40,228 INFO L87 Difference]: Start difference. First operand 2997 states and 4373 transitions. Second operand 5 states. [2019-11-06 22:15:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:41,981 INFO L93 Difference]: Finished difference Result 5374 states and 7862 transitions. [2019-11-06 22:15:41,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:15:41,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-11-06 22:15:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:41,993 INFO L225 Difference]: With dead ends: 5374 [2019-11-06 22:15:41,993 INFO L226 Difference]: Without dead ends: 2563 [2019-11-06 22:15:42,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:15:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2019-11-06 22:15:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2019-11-06 22:15:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2563 states. [2019-11-06 22:15:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3737 transitions. [2019-11-06 22:15:42,089 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3737 transitions. Word has length 151 [2019-11-06 22:15:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:42,090 INFO L462 AbstractCegarLoop]: Abstraction has 2563 states and 3737 transitions. [2019-11-06 22:15:42,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:15:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3737 transitions. [2019-11-06 22:15:42,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 22:15:42,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:42,097 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:42,098 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:42,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:42,098 INFO L82 PathProgramCache]: Analyzing trace with hash -341408988, now seen corresponding path program 1 times [2019-11-06 22:15:42,098 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:42,099 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298671568] [2019-11-06 22:15:42,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:42,424 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:42,473 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298671568] [2019-11-06 22:15:42,473 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:42,473 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:15:42,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080302142] [2019-11-06 22:15:42,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:15:42,475 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:15:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:42,476 INFO L87 Difference]: Start difference. First operand 2563 states and 3737 transitions. Second operand 4 states. [2019-11-06 22:15:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:15:44,398 INFO L93 Difference]: Finished difference Result 5831 states and 8728 transitions. [2019-11-06 22:15:44,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:15:44,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-11-06 22:15:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:15:44,412 INFO L225 Difference]: With dead ends: 5831 [2019-11-06 22:15:44,412 INFO L226 Difference]: Without dead ends: 3457 [2019-11-06 22:15:44,418 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:15:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2019-11-06 22:15:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3395. [2019-11-06 22:15:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2019-11-06 22:15:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 5094 transitions. [2019-11-06 22:15:44,532 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 5094 transitions. Word has length 152 [2019-11-06 22:15:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:15:44,532 INFO L462 AbstractCegarLoop]: Abstraction has 3395 states and 5094 transitions. [2019-11-06 22:15:44,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:15:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 5094 transitions. [2019-11-06 22:15:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-06 22:15:44,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:15:44,536 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:15:44,537 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:15:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:15:44,537 INFO L82 PathProgramCache]: Analyzing trace with hash 35518099, now seen corresponding path program 1 times [2019-11-06 22:15:44,537 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:15:44,538 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769285917] [2019-11-06 22:15:44,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:15:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:45,133 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:15:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:15:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:15:45,245 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769285917] [2019-11-06 22:15:45,245 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:15:45,245 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 22:15:45,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681959858] [2019-11-06 22:15:45,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 22:15:45,246 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:15:45,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 22:15:45,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:15:45,247 INFO L87 Difference]: Start difference. First operand 3395 states and 5094 transitions. Second operand 14 states. [2019-11-06 22:15:45,599 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 215