/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:57:16,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:57:16,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:57:16,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:57:16,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:57:16,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:57:16,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:57:16,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:57:16,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:57:16,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:57:16,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:57:16,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:57:16,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:57:16,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:57:16,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:57:16,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:57:16,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:57:16,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:57:16,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:57:16,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:57:16,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:57:16,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:57:16,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:57:16,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:57:16,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:57:16,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:57:16,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:57:16,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:57:16,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:57:16,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:57:16,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:57:16,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:57:16,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:57:16,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:57:16,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:57:16,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:57:16,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:57:16,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:57:16,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:57:16,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:57:16,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:57:16,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:57:16,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:57:16,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:57:16,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:57:16,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:57:16,650 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:57:16,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:57:16,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:57:16,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:57:16,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:57:16,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:57:16,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:57:16,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:57:16,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:57:16,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:57:16,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:57:16,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:57:16,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:57:16,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:57:16,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:57:16,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:57:16,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:57:16,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:57:16,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:57:16,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:57:16,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:57:16,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:57:16,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:57:16,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:57:16,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:57:16,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 00:57:17,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:57:17,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:57:17,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:57:17,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:57:17,141 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:57:17,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-09-25 00:57:17,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ee53869d/a03edd78101441619a7533da9ecf5776/FLAG4ab7da886 [2020-09-25 00:57:17,873 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:57:17,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list-2.i [2020-09-25 00:57:17,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ee53869d/a03edd78101441619a7533da9ecf5776/FLAG4ab7da886 [2020-09-25 00:57:18,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ee53869d/a03edd78101441619a7533da9ecf5776 [2020-09-25 00:57:18,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:57:18,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:57:18,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:57:18,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:57:18,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:57:18,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:18,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306b3b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18, skipping insertion in model container [2020-09-25 00:57:18,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:18,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:57:18,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:57:18,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:57:18,813 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:57:18,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:57:18,935 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:57:18,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18 WrapperNode [2020-09-25 00:57:18,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:57:18,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:57:18,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:57:18,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:57:18,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:18,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:18,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:18,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:18,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:19,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:19,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... [2020-09-25 00:57:19,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:57:19,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:57:19,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:57:19,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:57:19,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-25 00:57:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:57:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:57:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 00:57:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 00:57:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 00:57:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 00:57:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 00:57:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 00:57:19,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:57:19,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:57:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:57:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:57:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:57:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:57:19,108 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:57:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:57:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:57:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:57:19,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:57:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:57:19,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:57:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:57:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:57:19,111 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:57:19,112 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:57:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:57:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:57:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 00:57:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 00:57:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 00:57:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 00:57:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 00:57:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:57:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:57:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:57:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:57:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:57:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:57:19,116 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:57:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:57:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:57:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:57:19,117 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:57:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:57:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:57:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:57:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:57:19,118 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:57:19,119 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:57:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:57:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:57:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:57:19,120 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:57:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:57:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:57:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:57:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:57:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:57:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:57:19,121 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:57:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:57:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:57:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:57:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:57:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:57:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:57:19,122 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:57:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:57:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:57:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:57:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:57:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:57:19,123 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:57:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:57:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:57:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:57:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:57:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:57:19,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:57:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:57:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:57:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:57:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:57:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:57:19,125 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:57:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:57:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:57:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:57:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:57:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:57:19,126 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:57:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:57:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:57:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:57:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:57:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:57:19,127 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:57:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:57:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:57:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:57:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:57:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:57:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:57:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:57:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:57:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:57:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:57:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:57:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:57:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:57:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:57:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:57:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:57:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:57:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:57:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:57:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:57:19,131 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:57:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 00:57:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:57:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:57:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:57:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:57:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:57:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:57:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:57:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:57:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:57:19,502 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 00:57:19,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:57:19,749 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 00:57:19,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:57:19 BoogieIcfgContainer [2020-09-25 00:57:19,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:57:19,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:57:19,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:57:19,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:57:19,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:57:18" (1/3) ... [2020-09-25 00:57:19,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124dfbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:57:19, skipping insertion in model container [2020-09-25 00:57:19,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:57:18" (2/3) ... [2020-09-25 00:57:19,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124dfbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:57:19, skipping insertion in model container [2020-09-25 00:57:19,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:57:19" (3/3) ... [2020-09-25 00:57:19,764 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-09-25 00:57:19,776 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:57:19,787 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:57:19,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:57:19,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:57:19,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:57:19,844 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:57:19,844 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:57:19,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:57:19,844 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:57:19,844 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:57:19,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:57:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-25 00:57:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 00:57:19,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:19,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:19,882 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:19,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1227115345, now seen corresponding path program 1 times [2020-09-25 00:57:19,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:19,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871826540] [2020-09-25 00:57:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:20,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:57:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:57:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-09-25 00:57:20,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:57:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:20,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:57:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:20,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:20,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:20,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:57:20,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:20,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:20,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:20,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871826540] [2020-09-25 00:57:20,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:20,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:57:20,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008554672] [2020-09-25 00:57:20,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:57:20,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:20,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:57:20,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:57:20,735 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-09-25 00:57:20,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:20,957 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2020-09-25 00:57:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:57:20,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-25 00:57:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:20,972 INFO L225 Difference]: With dead ends: 110 [2020-09-25 00:57:20,972 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 00:57:20,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:57:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 00:57:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-25 00:57:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 00:57:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-25 00:57:21,034 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 22 [2020-09-25 00:57:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:21,035 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-25 00:57:21,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:57:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-25 00:57:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 00:57:21,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:21,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:57:21,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:57:21,038 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:21,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1237633361, now seen corresponding path program 1 times [2020-09-25 00:57:21,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:21,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715560676] [2020-09-25 00:57:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:21,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:21,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 00:57:21,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 00:57:21,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:57:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:57:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:57:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:21,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:21,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:21,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:57:21,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:21,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:21,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:21,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715560676] [2020-09-25 00:57:21,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:21,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:57:21,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923238253] [2020-09-25 00:57:21,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:57:21,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:21,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:57:21,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:57:21,313 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-09-25 00:57:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:21,568 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-25 00:57:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:57:21,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-25 00:57:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:21,571 INFO L225 Difference]: With dead ends: 134 [2020-09-25 00:57:21,571 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 00:57:21,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:21,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 00:57:21,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-09-25 00:57:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 00:57:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-09-25 00:57:21,586 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 30 [2020-09-25 00:57:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:21,587 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-09-25 00:57:21,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:57:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-09-25 00:57:21,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 00:57:21,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:21,590 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:57:21,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:57:21,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:21,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:21,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1213729417, now seen corresponding path program 1 times [2020-09-25 00:57:21,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:21,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704283276] [2020-09-25 00:57:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:21,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:57:21,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:21,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 00:57:21,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:21,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:57:21,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:57:21,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:57:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:21,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:57:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:21,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704283276] [2020-09-25 00:57:21,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:21,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:57:21,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359891098] [2020-09-25 00:57:21,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:57:21,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:21,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:57:21,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:57:21,835 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2020-09-25 00:57:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:22,081 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-09-25 00:57:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:57:22,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 00:57:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:22,084 INFO L225 Difference]: With dead ends: 137 [2020-09-25 00:57:22,084 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 00:57:22,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 00:57:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 67. [2020-09-25 00:57:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 00:57:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-09-25 00:57:22,094 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 36 [2020-09-25 00:57:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:22,094 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-09-25 00:57:22,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:57:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-09-25 00:57:22,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 00:57:22,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:22,096 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:57:22,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:57:22,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:22,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:22,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2044556103, now seen corresponding path program 1 times [2020-09-25 00:57:22,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:22,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313629603] [2020-09-25 00:57:22,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:22,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:57:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 00:57:22,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:57:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:57:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:57:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:22,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:22,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:22,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:57:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:22,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313629603] [2020-09-25 00:57:22,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:57:22,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:57:22,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144969353] [2020-09-25 00:57:22,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:57:22,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:22,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:57:22,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:57:22,321 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-09-25 00:57:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:22,523 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-09-25 00:57:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:57:22,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 00:57:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:22,525 INFO L225 Difference]: With dead ends: 119 [2020-09-25 00:57:22,525 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 00:57:22,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 00:57:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-09-25 00:57:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 00:57:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-09-25 00:57:22,533 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 36 [2020-09-25 00:57:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:22,534 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-09-25 00:57:22,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:57:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-09-25 00:57:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:57:22,535 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:22,536 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:57:22,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:57:22,536 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:22,537 INFO L82 PathProgramCache]: Analyzing trace with hash -833752717, now seen corresponding path program 1 times [2020-09-25 00:57:22,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:22,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537209585] [2020-09-25 00:57:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:23,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:23,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:57:23,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:57:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-25 00:57:23,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:57:23,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:57:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:57:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:23,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:23,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:23,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:57:23,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:23,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:23,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537209585] [2020-09-25 00:57:23,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:23,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:57:23,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405762969] [2020-09-25 00:57:23,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:57:23,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:57:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:57:23,874 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 11 states. [2020-09-25 00:57:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:24,474 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2020-09-25 00:57:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:57:24,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-25 00:57:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:24,476 INFO L225 Difference]: With dead ends: 143 [2020-09-25 00:57:24,477 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 00:57:24,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:57:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 00:57:24,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 81. [2020-09-25 00:57:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 00:57:24,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-09-25 00:57:24,493 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 41 [2020-09-25 00:57:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:24,493 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-09-25 00:57:24,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:57:24,493 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-09-25 00:57:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 00:57:24,500 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:24,500 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:57:24,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:57:24,501 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:24,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:24,501 INFO L82 PathProgramCache]: Analyzing trace with hash 865863745, now seen corresponding path program 1 times [2020-09-25 00:57:24,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:24,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313995254] [2020-09-25 00:57:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:57:25,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:57:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-25 00:57:25,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:57:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:57:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:57:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:25,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:25,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:25,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:57:25,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:25,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313995254] [2020-09-25 00:57:25,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:25,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:57:25,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328208600] [2020-09-25 00:57:25,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:57:25,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:25,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:57:25,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:57:25,535 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 11 states. [2020-09-25 00:57:26,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:26,125 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2020-09-25 00:57:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:57:26,126 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-09-25 00:57:26,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:26,128 INFO L225 Difference]: With dead ends: 159 [2020-09-25 00:57:26,128 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 00:57:26,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-09-25 00:57:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 00:57:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 93. [2020-09-25 00:57:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 00:57:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-09-25 00:57:26,143 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 41 [2020-09-25 00:57:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:26,145 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-09-25 00:57:26,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:57:26,145 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-09-25 00:57:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:57:26,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:26,148 INFO L422 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] [2020-09-25 00:57:26,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:57:26,150 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:26,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:26,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2114514645, now seen corresponding path program 1 times [2020-09-25 00:57:26,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:26,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464766991] [2020-09-25 00:57:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:26,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:28,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:28,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:57:28,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:57:28,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2659 [2020-09-25 00:57:28,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:57:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:57:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 00:57:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:28,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:28,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:28,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:57:28,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:28,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464766991] [2020-09-25 00:57:28,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:28,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:57:28,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50003617] [2020-09-25 00:57:28,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:57:28,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:28,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:57:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:28,994 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 9 states. [2020-09-25 00:57:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:29,418 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-09-25 00:57:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:57:29,419 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-25 00:57:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:29,420 INFO L225 Difference]: With dead ends: 160 [2020-09-25 00:57:29,421 INFO L226 Difference]: Without dead ends: 145 [2020-09-25 00:57:29,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:57:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-25 00:57:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 100. [2020-09-25 00:57:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 00:57:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-09-25 00:57:29,438 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 47 [2020-09-25 00:57:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:29,438 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-09-25 00:57:29,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:57:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-09-25 00:57:29,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:57:29,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:29,445 INFO L422 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] [2020-09-25 00:57:29,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:57:29,451 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:29,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:29,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1077832869, now seen corresponding path program 1 times [2020-09-25 00:57:29,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:29,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149585450] [2020-09-25 00:57:29,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:30,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:30,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:57:30,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:30,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 00:57:30,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:30,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:57:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:57:30,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:57:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:30,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:30,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149585450] [2020-09-25 00:57:30,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:30,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:57:30,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427161260] [2020-09-25 00:57:30,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:57:30,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:30,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:57:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:57:30,465 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 16 states. [2020-09-25 00:57:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:31,452 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-09-25 00:57:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:57:31,453 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 00:57:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:31,455 INFO L225 Difference]: With dead ends: 165 [2020-09-25 00:57:31,455 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 00:57:31,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 00:57:31,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 00:57:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 104. [2020-09-25 00:57:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 00:57:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-09-25 00:57:31,464 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 47 [2020-09-25 00:57:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:31,465 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-09-25 00:57:31,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:57:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-09-25 00:57:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:57:31,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:31,466 INFO L422 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] [2020-09-25 00:57:31,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:57:31,467 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:31,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1893706375, now seen corresponding path program 1 times [2020-09-25 00:57:31,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:31,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074995988] [2020-09-25 00:57:31,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:32,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:32,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:57:32,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-09-25 00:57:32,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:57:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:57:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:32,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:32,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:32,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:32,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:32,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:57:32,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:32,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:32,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:32,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:32,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074995988] [2020-09-25 00:57:32,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:32,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:57:32,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431542372] [2020-09-25 00:57:32,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:57:32,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:32,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:57:32,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:57:32,356 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 16 states. [2020-09-25 00:57:33,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:33,630 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-09-25 00:57:33,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:57:33,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-09-25 00:57:33,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:33,633 INFO L225 Difference]: With dead ends: 179 [2020-09-25 00:57:33,633 INFO L226 Difference]: Without dead ends: 173 [2020-09-25 00:57:33,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 00:57:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-25 00:57:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 113. [2020-09-25 00:57:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 00:57:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-09-25 00:57:33,647 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 47 [2020-09-25 00:57:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:33,648 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-09-25 00:57:33,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:57:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-09-25 00:57:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:57:33,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:33,651 INFO L422 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] [2020-09-25 00:57:33,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:57:33,651 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:33,652 INFO L82 PathProgramCache]: Analyzing trace with hash -857024599, now seen corresponding path program 1 times [2020-09-25 00:57:33,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:33,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19416243] [2020-09-25 00:57:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:33,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:34,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:34,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:57:34,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:57:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-09-25 00:57:34,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:57:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:57:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:57:34,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:34,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:34,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:34,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:34,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:57:34,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:35,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19416243] [2020-09-25 00:57:35,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:35,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:57:35,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075804996] [2020-09-25 00:57:35,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:57:35,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:35,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:57:35,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:57:35,007 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 9 states. [2020-09-25 00:57:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:35,474 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2020-09-25 00:57:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:57:35,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-09-25 00:57:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:35,476 INFO L225 Difference]: With dead ends: 171 [2020-09-25 00:57:35,476 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 00:57:35,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:57:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 00:57:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 113. [2020-09-25 00:57:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-25 00:57:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-25 00:57:35,486 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 47 [2020-09-25 00:57:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:35,487 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-25 00:57:35,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:57:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-25 00:57:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:57:35,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:35,488 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 00:57:35,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:57:35,489 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:35,490 INFO L82 PathProgramCache]: Analyzing trace with hash 294895633, now seen corresponding path program 2 times [2020-09-25 00:57:35,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:35,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238648942] [2020-09-25 00:57:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:37,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:37,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:57:37,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:57:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1732 [2020-09-25 00:57:37,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:57:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:37,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:57:37,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:37,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:37,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:37,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:57:37,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:37,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:37,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:37,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238648942] [2020-09-25 00:57:37,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:37,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 00:57:37,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578234571] [2020-09-25 00:57:37,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 00:57:37,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:37,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 00:57:37,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-25 00:57:37,643 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 20 states. [2020-09-25 00:57:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:38,669 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2020-09-25 00:57:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 00:57:38,669 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-09-25 00:57:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:38,671 INFO L225 Difference]: With dead ends: 183 [2020-09-25 00:57:38,672 INFO L226 Difference]: Without dead ends: 170 [2020-09-25 00:57:38,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 00:57:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-25 00:57:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2020-09-25 00:57:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-25 00:57:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 138 transitions. [2020-09-25 00:57:38,680 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 138 transitions. Word has length 52 [2020-09-25 00:57:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:38,681 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 138 transitions. [2020-09-25 00:57:38,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 00:57:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 138 transitions. [2020-09-25 00:57:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:57:38,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:38,682 INFO L422 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] [2020-09-25 00:57:38,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:57:38,682 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:38,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:38,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1689189507, now seen corresponding path program 1 times [2020-09-25 00:57:38,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:38,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379503652] [2020-09-25 00:57:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:39,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:39,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:57:39,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:57:39,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-09-25 00:57:39,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:39,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:57:39,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:39,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 00:57:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:40,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:57:40,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:40,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:40,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:40,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:40,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379503652] [2020-09-25 00:57:40,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:40,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 00:57:40,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459423211] [2020-09-25 00:57:40,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 00:57:40,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 00:57:40,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:57:40,334 INFO L87 Difference]: Start difference. First operand 129 states and 138 transitions. Second operand 18 states. [2020-09-25 00:57:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:41,645 INFO L93 Difference]: Finished difference Result 230 states and 244 transitions. [2020-09-25 00:57:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 00:57:41,646 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-09-25 00:57:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:41,648 INFO L225 Difference]: With dead ends: 230 [2020-09-25 00:57:41,649 INFO L226 Difference]: Without dead ends: 224 [2020-09-25 00:57:41,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 00:57:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-25 00:57:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 155. [2020-09-25 00:57:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 00:57:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-25 00:57:41,658 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 52 [2020-09-25 00:57:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:41,658 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-25 00:57:41,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 00:57:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-25 00:57:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:57:41,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:41,659 INFO L422 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] [2020-09-25 00:57:41,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 00:57:41,660 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:41,660 INFO L82 PathProgramCache]: Analyzing trace with hash 219391251, now seen corresponding path program 1 times [2020-09-25 00:57:41,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:41,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567455779] [2020-09-25 00:57:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:42,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:42,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:57:42,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:42,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-09-25 00:57:42,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:57:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:57:42,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:42,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:42,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:42,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:42,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:57:42,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:42,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:42,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:42,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567455779] [2020-09-25 00:57:42,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:42,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:57:42,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321859133] [2020-09-25 00:57:42,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:57:42,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:42,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:57:42,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:57:42,564 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 16 states. [2020-09-25 00:57:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:43,667 INFO L93 Difference]: Finished difference Result 221 states and 235 transitions. [2020-09-25 00:57:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:57:43,668 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 00:57:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:43,670 INFO L225 Difference]: With dead ends: 221 [2020-09-25 00:57:43,670 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 00:57:43,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 00:57:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 00:57:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 155. [2020-09-25 00:57:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 00:57:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-25 00:57:43,679 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 53 [2020-09-25 00:57:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:43,679 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-25 00:57:43,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:57:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-25 00:57:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:57:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:43,681 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 00:57:43,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 00:57:43,681 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:43,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1256073027, now seen corresponding path program 2 times [2020-09-25 00:57:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:43,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189028895] [2020-09-25 00:57:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:44,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:57:44,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-25 00:57:44,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:57:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:57:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:44,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:44,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:44,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:57:44,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:44,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:57:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:44,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189028895] [2020-09-25 00:57:44,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:44,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:57:44,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761620939] [2020-09-25 00:57:44,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:57:44,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:44,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:57:44,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:57:44,534 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 16 states. [2020-09-25 00:57:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:45,611 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2020-09-25 00:57:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:57:45,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 00:57:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:45,613 INFO L225 Difference]: With dead ends: 203 [2020-09-25 00:57:45,613 INFO L226 Difference]: Without dead ends: 173 [2020-09-25 00:57:45,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 00:57:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-25 00:57:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 146. [2020-09-25 00:57:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 00:57:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 156 transitions. [2020-09-25 00:57:45,620 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 156 transitions. Word has length 53 [2020-09-25 00:57:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:45,621 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 156 transitions. [2020-09-25 00:57:45,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:57:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 156 transitions. [2020-09-25 00:57:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:57:45,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:45,622 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 00:57:45,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 00:57:45,622 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:45,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash 164878513, now seen corresponding path program 2 times [2020-09-25 00:57:45,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:45,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398552845] [2020-09-25 00:57:45,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:46,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:46,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:57:46,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-09-25 00:57:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:46,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:57:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 00:57:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:46,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:46,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:46,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:46,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:57:46,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:46,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:46,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398552845] [2020-09-25 00:57:46,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:46,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:57:46,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117924347] [2020-09-25 00:57:46,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:57:46,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:46,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:57:46,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:57:46,393 INFO L87 Difference]: Start difference. First operand 146 states and 156 transitions. Second operand 16 states. [2020-09-25 00:57:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:47,559 INFO L93 Difference]: Finished difference Result 177 states and 188 transitions. [2020-09-25 00:57:47,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:57:47,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-09-25 00:57:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:47,561 INFO L225 Difference]: With dead ends: 177 [2020-09-25 00:57:47,562 INFO L226 Difference]: Without dead ends: 151 [2020-09-25 00:57:47,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 00:57:47,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-25 00:57:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 134. [2020-09-25 00:57:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 00:57:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2020-09-25 00:57:47,569 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 53 [2020-09-25 00:57:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:47,569 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2020-09-25 00:57:47,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:57:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2020-09-25 00:57:47,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:57:47,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:47,570 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:57:47,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 00:57:47,571 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:47,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1525845127, now seen corresponding path program 3 times [2020-09-25 00:57:47,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:47,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753347632] [2020-09-25 00:57:47,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:47,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:48,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:48,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:57:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-09-25 00:57:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 00:57:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:57:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 00:57:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:57:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:57:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:57:49,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:57:49,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:57:49,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:57:49,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:57:49,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:57:49,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:57:49,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:57:49,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:57:49,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:57:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:57:49,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753347632] [2020-09-25 00:57:49,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:57:49,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 00:57:49,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172728389] [2020-09-25 00:57:49,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 00:57:49,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:57:49,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 00:57:49,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-09-25 00:57:49,481 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 22 states. [2020-09-25 00:57:50,878 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-09-25 00:57:51,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:57:51,892 INFO L93 Difference]: Finished difference Result 223 states and 237 transitions. [2020-09-25 00:57:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 00:57:51,893 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-09-25 00:57:51,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:57:51,895 INFO L225 Difference]: With dead ends: 223 [2020-09-25 00:57:51,895 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 00:57:51,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=372, Invalid=2078, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 00:57:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 00:57:51,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 154. [2020-09-25 00:57:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 00:57:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2020-09-25 00:57:51,904 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 58 [2020-09-25 00:57:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:57:51,904 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2020-09-25 00:57:51,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 00:57:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2020-09-25 00:57:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:57:51,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:57:51,905 INFO L422 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] [2020-09-25 00:57:51,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 00:57:51,906 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:57:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:57:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1049071675, now seen corresponding path program 1 times [2020-09-25 00:57:51,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:57:51,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857365968] [2020-09-25 00:57:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:57:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:57:51,927 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:57:51,927 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:57:51,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 00:57:51,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:57:51 BoogieIcfgContainer [2020-09-25 00:57:51,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:57:51,958 INFO L168 Benchmark]: Toolchain (without parser) took 33742.85 ms. Allocated memory was 140.5 MB in the beginning and 487.1 MB in the end (delta: 346.6 MB). Free memory was 102.0 MB in the beginning and 248.8 MB in the end (delta: -146.8 MB). Peak memory consumption was 199.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:51,959 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:57:51,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.33 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.3 MB in the beginning and 169.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:51,960 INFO L168 Benchmark]: Boogie Preprocessor took 89.57 ms. Allocated memory is still 202.9 MB. Free memory was 168.7 MB in the beginning and 166.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:51,961 INFO L168 Benchmark]: RCFGBuilder took 728.08 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 118.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:51,962 INFO L168 Benchmark]: TraceAbstraction took 32200.24 ms. Allocated memory was 202.9 MB in the beginning and 487.1 MB in the end (delta: 284.2 MB). Free memory was 117.5 MB in the beginning and 248.8 MB in the end (delta: -131.3 MB). Peak memory consumption was 152.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:57:51,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.33 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.3 MB in the beginning and 169.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.57 ms. Allocated memory is still 202.9 MB. Free memory was 168.7 MB in the beginning and 166.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 728.08 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 118.1 MB in the end (delta: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32200.24 ms. Allocated memory was 202.9 MB in the beginning and 487.1 MB in the end (delta: 284.2 MB). Free memory was 117.5 MB in the beginning and 248.8 MB in the end (delta: -131.3 MB). Peak memory consumption was 152.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] COND TRUE __VERIFIER_nondet_int() [L526] p->h = 1 [L527] t = (List) malloc(sizeof(struct node)) [L528] COND FALSE !(t == 0) [L529] p->n = t [L530] EXPR p->n [L530] p = p->n [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND TRUE __VERIFIER_nondet_int() [L533] p->h = 2 [L534] t = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(t == 0) [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] EXPR p->h [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h [L543] COND TRUE p->h == 1 [L544] EXPR p->n [L544] p = p->n [L543] EXPR p->h [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.0s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 939 SDtfs, 3076 SDslu, 6714 SDs, 0 SdLazy, 5709 SolverSat, 485 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 722 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 773 NumberOfCodeBlocks, 773 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 308317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 26/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...