/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:35:14,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:35:14,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:35:14,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:35:14,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:35:14,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:35:14,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:35:14,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:35:14,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:35:14,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:35:14,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:35:14,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:35:14,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:35:14,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:35:14,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:35:14,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:35:14,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:35:14,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:35:14,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:35:14,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:35:14,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:35:14,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:35:14,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:35:14,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:35:14,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:35:14,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:35:14,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:35:14,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:35:14,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:35:14,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:35:14,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:35:14,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:35:14,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:35:14,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:35:14,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:35:14,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:35:14,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:35:14,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:35:14,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:35:14,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:35:14,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:35:14,485 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 [2020-10-13 10:35:14,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:35:14,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:35:14,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:35:14,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:35:14,511 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:35:14,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:35:14,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:35:14,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:35:14,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:35:14,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:35:14,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:35:14,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:35:14,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:35:14,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:35:14,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:35:14,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:35:14,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:35:14,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:35:14,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:35:14,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:35:14,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:35:14,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:35:14,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:35:14,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:35:14,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:35:14,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:35:14,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:35:14,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:35:14,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:35:14,516 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:35:14,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:35:14,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:35:14,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:35:14,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:35:14,835 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:35:14,836 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-13 10:35:14,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb19f2ca4/fd59feb9b5e349588d39ca766e96f8a4/FLAG7aa9274a0 [2020-10-13 10:35:15,506 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:35:15,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-13 10:35:15,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb19f2ca4/fd59feb9b5e349588d39ca766e96f8a4/FLAG7aa9274a0 [2020-10-13 10:35:15,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb19f2ca4/fd59feb9b5e349588d39ca766e96f8a4 [2020-10-13 10:35:15,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:35:15,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:35:15,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:35:15,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:35:15,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:35:15,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:35:15" (1/1) ... [2020-10-13 10:35:15,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43965ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:15, skipping insertion in model container [2020-10-13 10:35:15,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:35:15" (1/1) ... [2020-10-13 10:35:15,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:35:15,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:35:16,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:35:16,293 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:35:16,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:35:16,410 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:35:16,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16 WrapperNode [2020-10-13 10:35:16,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:35:16,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:35:16,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:35:16,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:35:16,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (1/1) ... [2020-10-13 10:35:16,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (1/1) ... [2020-10-13 10:35:16,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (1/1) ... [2020-10-13 10:35:16,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (1/1) ... [2020-10-13 10:35:16,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (1/1) ... [2020-10-13 10:35:16,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (1/1) ... [2020-10-13 10:35:16,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (1/1) ... [2020-10-13 10:35:16,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:35:16,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:35:16,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:35:16,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:35:16,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (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 [2020-10-13 10:35:16,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:35:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:35:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:35:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:35:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:35:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-13 10:35:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-13 10:35:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-13 10:35:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-10-13 10:35:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-10-13 10:35:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:35:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:35:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:35:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:35:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:35:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:35:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:35:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:35:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:35:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:35:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:35:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:35:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:35:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:35:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:35:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:35:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:35:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:35:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:35:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:35:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:35:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-13 10:35:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-13 10:35:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-13 10:35:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:35:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:35:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:35:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:35:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:35:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:35:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:35:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:35:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:35:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:35:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:35:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:35:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:35:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:35:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:35:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:35:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:35:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:35:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:35:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:35:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:35:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:35:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:35:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:35:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:35:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:35:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:35:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:35:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:35:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:35:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:35:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:35:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:35:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:35:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:35:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:35:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:35:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:35:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:35:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:35:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:35:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:35:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:35:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:35:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:35:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:35:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:35:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:35:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:35:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:35:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:35:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:35:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:35:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:35:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:35:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:35:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:35:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:35:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:35:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:35:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:35:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:35:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:35:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:35:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:35:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:35:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:35:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:35:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:35:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:35:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:35:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:35:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:35:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:35:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:35:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:35:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:35:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:35:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:35:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:35:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:35:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:35:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:35:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:35:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:35:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:35:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-10-13 10:35:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:35:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:35:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-10-13 10:35:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:35:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:35:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:35:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:35:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:35:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:35:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:35:17,096 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:35:17,097 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 10:35:17,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:35:17 BoogieIcfgContainer [2020-10-13 10:35:17,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:35:17,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:35:17,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:35:17,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:35:17,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:35:15" (1/3) ... [2020-10-13 10:35:17,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53670163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:35:17, skipping insertion in model container [2020-10-13 10:35:17,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:35:16" (2/3) ... [2020-10-13 10:35:17,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53670163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:35:17, skipping insertion in model container [2020-10-13 10:35:17,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:35:17" (3/3) ... [2020-10-13 10:35:17,110 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-10-13 10:35:17,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:35:17,125 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:35:17,136 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:35:17,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:35:17,156 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:35:17,156 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:35:17,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:35:17,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:35:17,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:35:17,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:35:17,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:35:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-13 10:35:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:35:17,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:17,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:17,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:17,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash -125905961, now seen corresponding path program 1 times [2020-10-13 10:35:17,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:17,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623719390] [2020-10-13 10:35:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:17,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:17,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:22,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:22,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:35:22,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:35:22,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 10:35:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 10:35:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:35:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:22,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:22,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:22,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:35:22,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:22,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:22,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:22,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:22,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:35:22,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:22,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:22,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:35:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:22,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:22,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:22,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:35:22,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:22,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:22,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:35:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:22,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:22,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:22,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:35:22,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:22,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:35:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:22,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:22,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:22,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:22,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:22,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:35:22,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:35:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 10:35:22,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623719390] [2020-10-13 10:35:22,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:35:22,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:35:22,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983831230] [2020-10-13 10:35:22,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:35:22,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:22,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:35:22,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:35:22,808 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-13 10:35:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:23,039 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-10-13 10:35:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:35:23,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-13 10:35:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:23,054 INFO L225 Difference]: With dead ends: 58 [2020-10-13 10:35:23,055 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 10:35:23,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:35:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 10:35:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-13 10:35:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 10:35:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-13 10:35:23,131 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 45 [2020-10-13 10:35:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:23,133 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-13 10:35:23,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:35:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-13 10:35:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:35:23,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:23,137 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:23,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:35:23,138 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:23,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1842115760, now seen corresponding path program 1 times [2020-10-13 10:35:23,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:23,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862449648] [2020-10-13 10:35:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:28,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:28,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:35:28,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:35:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:35:28,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:35:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 10:35:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:35:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:28,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:28,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:28,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:28,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:28,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:28,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:28,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:28,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:28,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:35:28,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:28,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:28,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:35:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:28,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:28,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:28,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:28,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 10:35:28,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:35:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:35:28,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:28,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:28,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:28,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:28,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 10:35:28,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:35:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:35:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:28,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:28,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:35:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:35:28,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 10:35:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:35:28,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862449648] [2020-10-13 10:35:28,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:35:28,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:35:28,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993762060] [2020-10-13 10:35:28,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:35:28,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:28,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:35:28,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:35:28,430 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 8 states. [2020-10-13 10:35:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:28,786 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2020-10-13 10:35:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:35:28,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-13 10:35:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:28,788 INFO L225 Difference]: With dead ends: 73 [2020-10-13 10:35:28,788 INFO L226 Difference]: Without dead ends: 49 [2020-10-13 10:35:28,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:35:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-13 10:35:28,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-13 10:35:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 10:35:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-10-13 10:35:28,802 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 47 [2020-10-13 10:35:28,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:28,803 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-10-13 10:35:28,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:35:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-10-13 10:35:28,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:35:28,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:28,805 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:28,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:35:28,806 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:28,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:28,806 INFO L82 PathProgramCache]: Analyzing trace with hash 874015054, now seen corresponding path program 1 times [2020-10-13 10:35:28,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:28,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022973172] [2020-10-13 10:35:28,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:29,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:29,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:35:29,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-13 10:35:29,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:35:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:35:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:35:29,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:29,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:29,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:29,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:29,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:29,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:29,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:29,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:29,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:29,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:29,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:35:29,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:29,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:29,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:29,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:29,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:29,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:29,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:35:29,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:29,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:29,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:29,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:35:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:29,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:29,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:29,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:29,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:29,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:35:29,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:35:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:35:29,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:29,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:29,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:35:29,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:35:29,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:35:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:29,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:35:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 10:35:29,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022973172] [2020-10-13 10:35:29,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:35:29,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 10:35:29,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308111690] [2020-10-13 10:35:29,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:35:29,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:35:29,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:35:29,355 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 11 states. [2020-10-13 10:35:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:29,895 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-10-13 10:35:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:35:29,895 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-10-13 10:35:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:29,899 INFO L225 Difference]: With dead ends: 55 [2020-10-13 10:35:29,899 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 10:35:29,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:35:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 10:35:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-13 10:35:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:35:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-13 10:35:29,909 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 47 [2020-10-13 10:35:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:29,909 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-13 10:35:29,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:35:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-13 10:35:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:35:29,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:29,911 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:29,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:35:29,912 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:29,912 INFO L82 PathProgramCache]: Analyzing trace with hash 480988044, now seen corresponding path program 1 times [2020-10-13 10:35:29,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:29,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872915020] [2020-10-13 10:35:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:35:30,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-13 10:35:30,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:35:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 10:35:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:35:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:30,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:30,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:35:30,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:30,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:30,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:30,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:35:30,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:30,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:30,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:30,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:30,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:30,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:30,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:35:30,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:35:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:30,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:30,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:35:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:30,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:30,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:35:30,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:35:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:35:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:30,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:30,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:35:30,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 10:35:30,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:35:30,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 10:35:30,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872915020] [2020-10-13 10:35:30,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:35:30,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:35:30,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390005706] [2020-10-13 10:35:30,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:35:30,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:30,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:35:30,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:35:30,573 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 9 states. [2020-10-13 10:35:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:31,110 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-10-13 10:35:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:35:31,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-13 10:35:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:31,116 INFO L225 Difference]: With dead ends: 54 [2020-10-13 10:35:31,116 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 10:35:31,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:35:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 10:35:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 10:35:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:35:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-13 10:35:31,134 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 47 [2020-10-13 10:35:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:31,136 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-13 10:35:31,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:35:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-13 10:35:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:35:31,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:31,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:31,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:35:31,143 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:31,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2060209205, now seen corresponding path program 1 times [2020-10-13 10:35:31,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:31,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487169854] [2020-10-13 10:35:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:31,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:32,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:32,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:35:32,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1758 [2020-10-13 10:35:32,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:35:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:35:32,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:35:32,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:33,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:33,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:33,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:33,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:33,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:33,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:33,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:35:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:33,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:33,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:33,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:33,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:33,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:35:33,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:33,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:33,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:33,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:33,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:33,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 10:35:33,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:35:33,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:33,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:35:33,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:33,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:33,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:33,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 10:35:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:35:33,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:35:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:35:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:33,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:33,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:35:33,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:35:33,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:35:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:35:33,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:35:33,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487169854] [2020-10-13 10:35:33,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:35:33,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:35:33,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911458099] [2020-10-13 10:35:33,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:35:33,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:33,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:35:33,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:35:33,676 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 16 states. [2020-10-13 10:35:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:34,645 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-13 10:35:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:35:34,646 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-13 10:35:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:34,647 INFO L225 Difference]: With dead ends: 59 [2020-10-13 10:35:34,647 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 10:35:34,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:35:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 10:35:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-10-13 10:35:34,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:35:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-13 10:35:34,662 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 50 [2020-10-13 10:35:34,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:34,662 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-13 10:35:34,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:35:34,662 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-13 10:35:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:35:34,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:34,670 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-13 10:35:34,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:35:34,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:34,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1841731081, now seen corresponding path program 1 times [2020-10-13 10:35:34,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:34,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809039902] [2020-10-13 10:35:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:34,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:35,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:35,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:35:35,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:35:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-13 10:35:35,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:35:35,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 10:35:35,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:35:35,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:35,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:35:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:35,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:35,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:35:35,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:35,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:35:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:35,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:35,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:35,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:35,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:35:35,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:35,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:35,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:35,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:35,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:35,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 10:35:35,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:35:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:35:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:36,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:36,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:36,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:36,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:35:36,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 10:35:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:35:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:35:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 10:35:36,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809039902] [2020-10-13 10:35:36,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:35:36,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:35:36,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505152128] [2020-10-13 10:35:36,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:35:36,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:35:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:35:36,186 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2020-10-13 10:35:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:36,649 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-13 10:35:36,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:35:36,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-13 10:35:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:36,652 INFO L225 Difference]: With dead ends: 59 [2020-10-13 10:35:36,652 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 10:35:36,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:35:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 10:35:36,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-13 10:35:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:35:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-13 10:35:36,661 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 50 [2020-10-13 10:35:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:36,662 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-13 10:35:36,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:35:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-13 10:35:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:35:36,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:36,663 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2020-10-13 10:35:36,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:35:36,663 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:36,664 INFO L82 PathProgramCache]: Analyzing trace with hash -65733586, now seen corresponding path program 2 times [2020-10-13 10:35:36,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:36,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107799331] [2020-10-13 10:35:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:35:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-13 10:35:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:35:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:35:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:35:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:37,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:37,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:37,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:37,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:37,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:35:37,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:37,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:37,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:37,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:37,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:37,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:35:37,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:35:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:35:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:37,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:37,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:37,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 10:35:37,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:37,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:35:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:35:37,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:35:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:37,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 10:35:37,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:35:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:35:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:35:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:38,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:38,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:38,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:35:38,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:38,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:35:38,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:38,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:35:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:35:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:35:38,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107799331] [2020-10-13 10:35:38,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:35:38,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:35:38,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336615053] [2020-10-13 10:35:38,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:35:38,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:38,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:35:38,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:35:38,562 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 21 states. [2020-10-13 10:35:38,988 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-13 10:35:39,389 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2020-10-13 10:35:39,566 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-13 10:35:40,270 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-13 10:35:40,542 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-13 10:35:40,796 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2020-10-13 10:35:41,230 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-13 10:35:41,572 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 10:35:41,759 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-13 10:35:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:41,920 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-10-13 10:35:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:35:41,921 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 53 [2020-10-13 10:35:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:41,922 INFO L225 Difference]: With dead ends: 67 [2020-10-13 10:35:41,922 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 10:35:41,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=229, Invalid=1331, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:35:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 10:35:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-13 10:35:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-13 10:35:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-13 10:35:41,950 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 53 [2020-10-13 10:35:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:41,952 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-13 10:35:41,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:35:41,952 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-13 10:35:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:35:41,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:41,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:41,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:35:41,955 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:41,955 INFO L82 PathProgramCache]: Analyzing trace with hash -458760596, now seen corresponding path program 2 times [2020-10-13 10:35:41,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:41,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931399282] [2020-10-13 10:35:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:41,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:35:42,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 719 [2020-10-13 10:35:42,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:35:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 10:35:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:35:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:35:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:35:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:35:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:35:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:42,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:35:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 10:35:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:42,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:35:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:35:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:35:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:35:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 10:35:42,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:35:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:35:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:35:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:35:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:43,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:43,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:35:43,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:35:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 10:35:43,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:43,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:35:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:35:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:35:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:35:43,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 10:35:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:35:43,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:35:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:35:43,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:35:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:35:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 10:35:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:35:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:35:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:35:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:35:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:35:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 10:35:43,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931399282] [2020-10-13 10:35:43,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:35:43,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:35:43,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694654087] [2020-10-13 10:35:43,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:35:43,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:35:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:35:43,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:35:43,534 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 16 states. [2020-10-13 10:35:43,998 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-13 10:35:44,465 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-10-13 10:35:45,345 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-13 10:35:45,633 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-13 10:35:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:35:45,789 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-10-13 10:35:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:35:45,790 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-13 10:35:45,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:35:45,792 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:35:45,792 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 10:35:45,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:35:45,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 10:35:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-10-13 10:35:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 10:35:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 10:35:45,805 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 53 [2020-10-13 10:35:45,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:35:45,806 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 10:35:45,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:35:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 10:35:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:35:45,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:35:45,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:35:45,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:35:45,807 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:35:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:35:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash 779859179, now seen corresponding path program 3 times [2020-10-13 10:35:45,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:35:45,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143075112] [2020-10-13 10:35:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:35:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:35:45,839 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:35:45,839 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:35:45,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:35:45,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:35:45 BoogieIcfgContainer [2020-10-13 10:35:45,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:35:45,867 INFO L168 Benchmark]: Toolchain (without parser) took 30079.59 ms. Allocated memory was 139.5 MB in the beginning and 565.2 MB in the end (delta: 425.7 MB). Free memory was 101.5 MB in the beginning and 254.7 MB in the end (delta: -153.2 MB). Peak memory consumption was 272.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:45,868 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 10:35:45,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.10 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.1 MB in the beginning and 171.2 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:45,870 INFO L168 Benchmark]: Boogie Preprocessor took 83.65 ms. Allocated memory is still 205.0 MB. Free memory was 171.2 MB in the beginning and 168.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:45,870 INFO L168 Benchmark]: RCFGBuilder took 605.13 ms. Allocated memory is still 205.0 MB. Free memory was 168.3 MB in the beginning and 123.2 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:45,871 INFO L168 Benchmark]: TraceAbstraction took 28763.16 ms. Allocated memory was 205.0 MB in the beginning and 565.2 MB in the end (delta: 360.2 MB). Free memory was 123.2 MB in the beginning and 254.7 MB in the end (delta: -131.5 MB). Peak memory consumption was 228.7 MB. Max. memory is 7.1 GB. [2020-10-13 10:35:45,874 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 617.10 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.1 MB in the beginning and 171.2 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.65 ms. Allocated memory is still 205.0 MB. Free memory was 171.2 MB in the beginning and 168.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 605.13 ms. Allocated memory is still 205.0 MB. Free memory was 168.3 MB in the beginning and 123.2 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28763.16 ms. Allocated memory was 205.0 MB in the beginning and 565.2 MB in the end (delta: 360.2 MB). Free memory was 123.2 MB in the beginning and 254.7 MB in the end (delta: -131.5 MB). Peak memory consumption was 228.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L522] mlist *head; [L543] int i; [L544] mlist *mylist, *temp; [L545] CALL insert_list(mylist,2) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND TRUE head==((void *)0) [L534] l->next = ((void *)0) [L539] head = l [L540] return 0; [L545] RET insert_list(mylist,2) [L546] CALL insert_list(mylist,5) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND FALSE !(head==((void *)0)) [L536] l->key = k [L537] l->next = head [L539] head = l [L540] return 0; [L546] RET insert_list(mylist,5) [L547] CALL insert_list(mylist,1) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND FALSE !(head==((void *)0)) [L536] l->key = k [L537] l->next = head [L539] head = l [L540] return 0; [L547] RET insert_list(mylist,1) [L548] CALL insert_list(mylist,3) [L531] l = (mlist*)malloc(sizeof(mlist)) [L532] l->key = k [L533] COND FALSE !(head==((void *)0)) [L536] l->key = k [L537] l->next = head [L539] head = l [L540] return 0; [L548] RET insert_list(mylist,3) [L549] CALL, EXPR search_list(head,2) [L524] l = head [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND TRUE l!=((void *)0) && l->key!=k [L526] EXPR l->next [L526] l = l->next [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND TRUE l!=((void *)0) && l->key!=k [L526] EXPR l->next [L526] l = l->next [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND TRUE l!=((void *)0) && l->key!=k [L526] EXPR l->next [L526] l = l->next [L525] l!=((void *)0) && l->key!=k [L525] EXPR l->key [L525] l!=((void *)0) && l->key!=k [L525] COND FALSE !(l!=((void *)0) && l->key!=k) [L528] return l; [L549] RET, EXPR search_list(head,2) [L549] temp = search_list(head,2) [L550] EXPR temp->key [L550] CALL __VERIFIER_assert(temp->key==1) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.6s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 581 SDslu, 593 SDs, 0 SdLazy, 2065 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=8, 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, 8 MinimizatonAttempts, 37 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 448 NumberOfCodeBlocks, 448 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 211914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 216/264 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...