/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:52:37,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:52:37,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:52:37,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:52:37,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:52:37,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:52:37,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:52:37,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:52:37,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:52:37,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:52:37,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:52:37,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:52:37,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:52:37,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:52:37,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:52:37,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:52:37,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:52:37,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:52:37,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:52:37,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:52:37,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:52:37,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:52:37,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:52:37,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:52:37,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:52:37,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:52:37,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:52:37,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:52:37,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:52:37,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:52:37,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:52:37,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:52:37,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:52:37,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:52:37,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:52:37,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:52:37,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:52:37,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:52:37,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:52:37,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:52:37,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:52:37,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:52:37,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:52:37,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:52:37,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:52:37,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:52:37,761 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:52:37,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:52:37,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:52:37,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:52:37,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:52:37,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:52:37,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:52:37,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:52:37,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:52:37,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:52:37,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:52:37,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:52:37,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:52:37,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:52:37,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:52:37,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:52:37,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:52:37,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:52:37,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:52:37,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:52:37,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:52:37,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:52:37,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:52:37,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:52:37,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:52:37,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:52:38,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:52:38,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:52:38,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:52:38,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:52:38,256 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:52:38,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-24 23:52:38,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b48652f78/11e846f33a8c4d32bc041de0b134d35e/FLAG34b6ac65a [2020-09-24 23:52:38,967 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:52:38,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-24 23:52:38,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b48652f78/11e846f33a8c4d32bc041de0b134d35e/FLAG34b6ac65a [2020-09-24 23:52:39,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b48652f78/11e846f33a8c4d32bc041de0b134d35e [2020-09-24 23:52:39,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:52:39,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:52:39,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:52:39,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:52:39,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:52:39,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:39,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39, skipping insertion in model container [2020-09-24 23:52:39,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:39,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:52:39,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:52:39,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:52:39,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:52:39,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:52:39,954 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:52:39,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39 WrapperNode [2020-09-24 23:52:39,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:52:39,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:52:39,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:52:39,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:52:39,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:39,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:39,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:39,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:40,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:40,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:40,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... [2020-09-24 23:52:40,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:52:40,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:52:40,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:52:40,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:52:40,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:52:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:52:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:52:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 23:52:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 23:52:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 23:52:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 23:52:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-24 23:52:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 23:52:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:52:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:52:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:52:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 23:52:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 23:52:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 23:52:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 23:52:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 23:52:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 23:52:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 23:52:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 23:52:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 23:52:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 23:52:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 23:52:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 23:52:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 23:52:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 23:52:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 23:52:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 23:52:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 23:52:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 23:52:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 23:52:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 23:52:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 23:52:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 23:52:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 23:52:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 23:52:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 23:52:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 23:52:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 23:52:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 23:52:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 23:52:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 23:52:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 23:52:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 23:52:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 23:52:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 23:52:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 23:52:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 23:52:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 23:52:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 23:52:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 23:52:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 23:52:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:52:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 23:52:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 23:52:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 23:52:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 23:52:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 23:52:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 23:52:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 23:52:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 23:52:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 23:52:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:52:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 23:52:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 23:52:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 23:52:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 23:52:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 23:52:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 23:52:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 23:52:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 23:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 23:52:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 23:52:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 23:52:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 23:52:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 23:52:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 23:52:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 23:52:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 23:52:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 23:52:40,131 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 23:52:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:52:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:52:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-24 23:52:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 23:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:52:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:52:40,502 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 23:52:40,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:52:40,686 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 23:52:40,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:52:40 BoogieIcfgContainer [2020-09-24 23:52:40,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:52:40,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:52:40,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:52:40,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:52:40,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:52:39" (1/3) ... [2020-09-24 23:52:40,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f31f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:52:40, skipping insertion in model container [2020-09-24 23:52:40,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:52:39" (2/3) ... [2020-09-24 23:52:40,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f31f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:52:40, skipping insertion in model container [2020-09-24 23:52:40,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:52:40" (3/3) ... [2020-09-24 23:52:40,702 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-24 23:52:40,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:52:40,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:52:40,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:52:40,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:52:40,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:52:40,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:52:40,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:52:40,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:52:40,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:52:40,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:52:40,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:52:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-24 23:52:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 23:52:40,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:40,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:40,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1731717969, now seen corresponding path program 1 times [2020-09-24 23:52:40,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:40,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201239734] [2020-09-24 23:52:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:41,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:41,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:41,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 23:52:41,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:41,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-09-24 23:52:41,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:52:41,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:52:41,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:41,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:41,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:41,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:52:41,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:41,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:52:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:41,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:41,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:41,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 23:52:41,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:52:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:52:41,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 23:52:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:41,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:41,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:41,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:52:41,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:41,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:41,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201239734] [2020-09-24 23:52:41,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:41,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:52:41,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314412756] [2020-09-24 23:52:41,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:52:41,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:41,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:52:41,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:52:41,745 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 7 states. [2020-09-24 23:52:42,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:42,290 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2020-09-24 23:52:42,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:52:42,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-09-24 23:52:42,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:42,306 INFO L225 Difference]: With dead ends: 186 [2020-09-24 23:52:42,306 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 23:52:42,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:52:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 23:52:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2020-09-24 23:52:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 23:52:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-09-24 23:52:42,378 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 29 [2020-09-24 23:52:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:42,378 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-09-24 23:52:42,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:52:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-09-24 23:52:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 23:52:42,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:42,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:42,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:52:42,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:42,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2090477770, now seen corresponding path program 1 times [2020-09-24 23:52:42,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:42,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843354091] [2020-09-24 23:52:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:42,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:45,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:45,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:52:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:52:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-09-24 23:52:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:52:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:52:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:45,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:45,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:45,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:45,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:45,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:45,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:45,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:45,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 23:52:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:45,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:45,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:52:45,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 23:52:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:45,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:45,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843354091] [2020-09-24 23:52:45,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:45,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:52:45,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258137443] [2020-09-24 23:52:45,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:52:45,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:45,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:52:45,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:52:45,403 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 8 states. [2020-09-24 23:52:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:45,867 INFO L93 Difference]: Finished difference Result 172 states and 189 transitions. [2020-09-24 23:52:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:52:45,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-24 23:52:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:45,870 INFO L225 Difference]: With dead ends: 172 [2020-09-24 23:52:45,870 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 23:52:45,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:52:45,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 23:52:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2020-09-24 23:52:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 23:52:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-09-24 23:52:45,887 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 41 [2020-09-24 23:52:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:45,887 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-09-24 23:52:45,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:52:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-09-24 23:52:45,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 23:52:45,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:45,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:45,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:52:45,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:45,890 INFO L82 PathProgramCache]: Analyzing trace with hash 360366586, now seen corresponding path program 1 times [2020-09-24 23:52:45,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:45,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837917471] [2020-09-24 23:52:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:45,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:52:48,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:52:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2791 [2020-09-24 23:52:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:52:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:52:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:48,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:48,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:48,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:48,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:48,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:52:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:48,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:48,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:52:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 23:52:48,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:52:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:52:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:52:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 23:52:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:48,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:48,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:48,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:48,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837917471] [2020-09-24 23:52:48,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:48,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:52:48,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019995200] [2020-09-24 23:52:48,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:52:48,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:48,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:52:48,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:52:48,919 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 9 states. [2020-09-24 23:52:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:49,315 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2020-09-24 23:52:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:52:49,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-24 23:52:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:49,319 INFO L225 Difference]: With dead ends: 129 [2020-09-24 23:52:49,320 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 23:52:49,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:52:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 23:52:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2020-09-24 23:52:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 23:52:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2020-09-24 23:52:49,333 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 44 [2020-09-24 23:52:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:49,333 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2020-09-24 23:52:49,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:52:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2020-09-24 23:52:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 23:52:49,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:49,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:49,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:52:49,336 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:49,337 INFO L82 PathProgramCache]: Analyzing trace with hash -829611268, now seen corresponding path program 1 times [2020-09-24 23:52:49,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:49,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653499740] [2020-09-24 23:52:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:49,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:49,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:52:49,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 23:52:49,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:52:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:52:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:49,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:49,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:49,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:52:49,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:49,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 23:52:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:49,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:49,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:49,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:49,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:52:49,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:52:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:52:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:52:49,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:52:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:49,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:49,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:49,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:49,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:49,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653499740] [2020-09-24 23:52:49,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:49,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:52:49,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757769298] [2020-09-24 23:52:49,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:52:49,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:49,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:52:49,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:52:49,674 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 9 states. [2020-09-24 23:52:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:50,128 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-09-24 23:52:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:52:50,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-24 23:52:50,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:50,130 INFO L225 Difference]: With dead ends: 140 [2020-09-24 23:52:50,130 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 23:52:50,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:52:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 23:52:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 92. [2020-09-24 23:52:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-24 23:52:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2020-09-24 23:52:50,149 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 45 [2020-09-24 23:52:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:50,149 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2020-09-24 23:52:50,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:52:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2020-09-24 23:52:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 23:52:50,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:50,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:50,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:52:50,158 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1801872195, now seen corresponding path program 2 times [2020-09-24 23:52:50,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:50,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397227327] [2020-09-24 23:52:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:50,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 23:52:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:52:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2503 [2020-09-24 23:52:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:52:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 23:52:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:52,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:52,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:52,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:52,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:52:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:52:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:52,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:52,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:52,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 23:52:52,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:52,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-24 23:52:52,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:52:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:52:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:52:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 23:52:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:52,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:52,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:52:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:53,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397227327] [2020-09-24 23:52:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:53,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:52:53,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676201576] [2020-09-24 23:52:53,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:52:53,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:52:53,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:52:53,006 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 11 states. [2020-09-24 23:52:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:53,482 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-09-24 23:52:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 23:52:53,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-24 23:52:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:53,485 INFO L225 Difference]: With dead ends: 147 [2020-09-24 23:52:53,485 INFO L226 Difference]: Without dead ends: 127 [2020-09-24 23:52:53,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:52:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-24 23:52:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 101. [2020-09-24 23:52:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 23:52:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-09-24 23:52:53,499 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 53 [2020-09-24 23:52:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:53,500 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-09-24 23:52:53,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:52:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-09-24 23:52:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 23:52:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:53,502 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:53,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:52:53,502 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:53,503 INFO L82 PathProgramCache]: Analyzing trace with hash 840072530, now seen corresponding path program 1 times [2020-09-24 23:52:53,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:53,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231565203] [2020-09-24 23:52:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:53,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:53,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:54,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-24 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:54,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:52:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:54,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:54,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:54,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:54,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:54,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:52:54,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:54,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:54,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:54,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 23:52:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:54,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:54,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:52:54,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:54,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 23:52:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:54,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:54,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:52:54,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:52:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:54,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231565203] [2020-09-24 23:52:54,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:54,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:52:54,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888850845] [2020-09-24 23:52:54,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:52:54,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:54,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:52:54,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:52:54,705 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 10 states. [2020-09-24 23:52:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:55,387 INFO L93 Difference]: Finished difference Result 230 states and 252 transitions. [2020-09-24 23:52:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 23:52:55,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-09-24 23:52:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:55,390 INFO L225 Difference]: With dead ends: 230 [2020-09-24 23:52:55,391 INFO L226 Difference]: Without dead ends: 158 [2020-09-24 23:52:55,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2020-09-24 23:52:55,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-24 23:52:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 108. [2020-09-24 23:52:55,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 23:52:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-09-24 23:52:55,417 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 53 [2020-09-24 23:52:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:55,417 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-09-24 23:52:55,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:52:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-09-24 23:52:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 23:52:55,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:55,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:55,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:52:55,421 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:55,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2096888703, now seen corresponding path program 1 times [2020-09-24 23:52:55,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:55,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328097386] [2020-09-24 23:52:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:56,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:00,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:00,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 23:53:00,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:53:00,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:53:00,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:53:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:53:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 23:53:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:53:00,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:53:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:00,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:00,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:00,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:53:00,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:53:00,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:53:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:53:00,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:53:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 23:53:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:00,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:53:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 23:53:00,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:53:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:53:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:53:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 23:53:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:00,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:53:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:53:00,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:53:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:53:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:53:00,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:53:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:53:00,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328097386] [2020-09-24 23:53:00,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:53:00,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 23:53:00,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052575655] [2020-09-24 23:53:00,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:53:00,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:53:00,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:53:00,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:53:00,712 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 11 states. [2020-09-24 23:53:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:53:01,218 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2020-09-24 23:53:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 23:53:01,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-09-24 23:53:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:53:01,221 INFO L225 Difference]: With dead ends: 139 [2020-09-24 23:53:01,221 INFO L226 Difference]: Without dead ends: 113 [2020-09-24 23:53:01,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:53:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-24 23:53:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 102. [2020-09-24 23:53:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-24 23:53:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2020-09-24 23:53:01,229 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 54 [2020-09-24 23:53:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:53:01,230 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2020-09-24 23:53:01,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:53:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2020-09-24 23:53:01,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 23:53:01,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:53:01,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-09-24 23:53:01,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:53:01,231 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:53:01,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:53:01,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1727079450, now seen corresponding path program 3 times [2020-09-24 23:53:01,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:53:01,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183589750] [2020-09-24 23:53:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:53:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:01,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:01,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 23:53:01,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:53:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-24 23:53:01,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:53:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 23:53:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:53:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:53:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:53:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:01,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:01,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:53:01,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:53:01,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:53:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:53:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:53:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:02,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:02,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:53:02,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 23:53:02,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:53:02,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 23:53:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 23:53:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:53:02,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:53:02,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:53:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:53:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:53:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 23:53:02,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183589750] [2020-09-24 23:53:02,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:53:02,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 23:53:02,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871020330] [2020-09-24 23:53:02,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:53:02,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:53:02,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:53:02,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:53:02,114 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 12 states. [2020-09-24 23:53:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:53:02,539 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2020-09-24 23:53:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:53:02,540 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-09-24 23:53:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:53:02,541 INFO L225 Difference]: With dead ends: 116 [2020-09-24 23:53:02,541 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 23:53:02,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-24 23:53:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 23:53:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2020-09-24 23:53:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-24 23:53:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2020-09-24 23:53:02,549 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 62 [2020-09-24 23:53:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:53:02,549 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2020-09-24 23:53:02,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:53:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2020-09-24 23:53:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 23:53:02,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:53:02,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:53:02,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:53:02,551 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:53:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:53:02,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1187742581, now seen corresponding path program 1 times [2020-09-24 23:53:02,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:53:02,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439717507] [2020-09-24 23:53:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:53:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:02,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:03,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:03,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 23:53:03,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:53:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-09-24 23:53:03,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:53:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 23:53:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 23:53:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:53:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:53:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:03,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:03,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:53:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:53:03,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:53:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:53:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:53:03,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:53:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:03,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:03,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:03,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:53:03,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:03,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 23:53:03,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:53:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 23:53:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:03,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 23:53:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:03,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:03,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 23:53:03,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 23:53:03,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:53:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:53:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 23:53:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:53:04,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439717507] [2020-09-24 23:53:04,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:53:04,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 23:53:04,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455135928] [2020-09-24 23:53:04,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 23:53:04,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:53:04,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 23:53:04,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:53:04,070 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand 16 states. [2020-09-24 23:53:04,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:53:04,884 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2020-09-24 23:53:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 23:53:04,886 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-09-24 23:53:04,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:53:04,887 INFO L225 Difference]: With dead ends: 123 [2020-09-24 23:53:04,887 INFO L226 Difference]: Without dead ends: 115 [2020-09-24 23:53:04,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2020-09-24 23:53:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-24 23:53:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2020-09-24 23:53:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 23:53:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2020-09-24 23:53:04,897 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 69 [2020-09-24 23:53:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:53:04,899 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2020-09-24 23:53:04,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 23:53:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2020-09-24 23:53:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 23:53:04,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:53:04,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:53:04,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:53:04,901 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:53:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:53:04,901 INFO L82 PathProgramCache]: Analyzing trace with hash 979580858, now seen corresponding path program 2 times [2020-09-24 23:53:04,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:53:04,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908851248] [2020-09-24 23:53:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:53:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:09,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:09,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:09,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 23:53:09,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:53:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 23:53:09,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:53:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:53:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 23:53:09,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:53:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:10,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:10,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:53:10,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:53:10,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:53:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:53:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:53:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:10,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:10,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 23:53:10,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:53:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 23:53:10,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:53:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:10,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 23:53:10,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:10,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 23:53:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:10,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:10,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:10,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:53:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 23:53:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:53:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 23:53:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:10,523 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 23:53:10,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908851248] [2020-09-24 23:53:10,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:53:10,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 23:53:10,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315187052] [2020-09-24 23:53:10,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:53:10,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:53:10,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:53:10,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:53:10,525 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand 12 states. [2020-09-24 23:53:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:53:11,187 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2020-09-24 23:53:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 23:53:11,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-09-24 23:53:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:53:11,188 INFO L225 Difference]: With dead ends: 135 [2020-09-24 23:53:11,188 INFO L226 Difference]: Without dead ends: 130 [2020-09-24 23:53:11,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-24 23:53:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-24 23:53:11,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2020-09-24 23:53:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 23:53:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 132 transitions. [2020-09-24 23:53:11,198 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 132 transitions. Word has length 76 [2020-09-24 23:53:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:53:11,199 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 132 transitions. [2020-09-24 23:53:11,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:53:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 132 transitions. [2020-09-24 23:53:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 23:53:11,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:53:11,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:53:11,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 23:53:11,201 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:53:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:53:11,201 INFO L82 PathProgramCache]: Analyzing trace with hash -446623556, now seen corresponding path program 1 times [2020-09-24 23:53:11,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:53:11,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746721317] [2020-09-24 23:53:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:53:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:11,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:11,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 23:53:11,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-24 23:53:11,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:53:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:53:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:53:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:53:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:11,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:11,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:53:11,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:11,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:53:11,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:53:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:53:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:53:11,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 23:53:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:11,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:11,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 23:53:11,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:11,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 23:53:11,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:53:11,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:53:11,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:53:11,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 23:53:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:53:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:53:11,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:53:11,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:53:11,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:53:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:53:11,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:53:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:53:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 23:53:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:53:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:53:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 23:53:11,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746721317] [2020-09-24 23:53:11,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:53:11,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 23:53:11,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011545800] [2020-09-24 23:53:11,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:53:11,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:53:11,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:53:11,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:53:11,851 INFO L87 Difference]: Start difference. First operand 123 states and 132 transitions. Second operand 13 states. [2020-09-24 23:53:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:53:12,473 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2020-09-24 23:53:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 23:53:12,474 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-09-24 23:53:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:53:12,475 INFO L225 Difference]: With dead ends: 173 [2020-09-24 23:53:12,475 INFO L226 Difference]: Without dead ends: 132 [2020-09-24 23:53:12,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:53:12,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-24 23:53:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2020-09-24 23:53:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-24 23:53:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2020-09-24 23:53:12,490 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 77 [2020-09-24 23:53:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:53:12,490 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2020-09-24 23:53:12,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:53:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2020-09-24 23:53:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 23:53:12,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:53:12,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-09-24 23:53:12,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 23:53:12,492 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:53:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:53:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1305863211, now seen corresponding path program 3 times [2020-09-24 23:53:12,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:53:12,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552825467] [2020-09-24 23:53:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:53:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:53:12,516 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:53:12,516 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:53:12,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 23:53:12,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:53:12 BoogieIcfgContainer [2020-09-24 23:53:12,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:53:12,554 INFO L168 Benchmark]: Toolchain (without parser) took 33302.39 ms. Allocated memory was 142.1 MB in the beginning and 437.8 MB in the end (delta: 295.7 MB). Free memory was 102.9 MB in the beginning and 389.1 MB in the end (delta: -286.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:53:12,560 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:53:12,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.67 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 172.5 MB in the end (delta: -70.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:53:12,562 INFO L168 Benchmark]: Boogie Preprocessor took 69.40 ms. Allocated memory is still 205.5 MB. Free memory was 172.5 MB in the beginning and 169.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:53:12,562 INFO L168 Benchmark]: RCFGBuilder took 666.93 ms. Allocated memory is still 205.5 MB. Free memory was 169.3 MB in the beginning and 123.6 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-09-24 23:53:12,564 INFO L168 Benchmark]: TraceAbstraction took 31856.93 ms. Allocated memory was 205.5 MB in the beginning and 437.8 MB in the end (delta: 232.3 MB). Free memory was 123.0 MB in the beginning and 389.1 MB in the end (delta: -266.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:53:12,578 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.67 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 172.5 MB in the end (delta: -70.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.40 ms. Allocated memory is still 205.5 MB. Free memory was 172.5 MB in the beginning and 169.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 666.93 ms. Allocated memory is still 205.5 MB. Free memory was 169.3 MB in the beginning and 123.6 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31856.93 ms. Allocated memory was 205.5 MB in the beginning and 437.8 MB in the end (delta: 232.3 MB). Free memory was 123.0 MB in the beginning and 389.1 MB in the end (delta: -266.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 31.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 678 SDtfs, 1620 SDslu, 1815 SDs, 0 SdLazy, 4001 SolverSat, 253 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=10, 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, 11 MinimizatonAttempts, 240 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 686 NumberOfCodeBlocks, 686 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 592 ConstructedInterpolants, 0 QuantifiedInterpolants, 94126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 102/167 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...