/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:48:27,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:48:27,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:48:27,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:48:27,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:48:27,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:48:27,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:48:27,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:48:27,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:48:27,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:48:27,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:48:27,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:48:27,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:48:27,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:48:27,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:48:27,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:48:27,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:48:27,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:48:27,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:48:27,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:48:27,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:48:27,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:48:27,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:48:27,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:48:27,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:48:27,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:48:27,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:48:27,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:48:27,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:48:27,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:48:27,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:48:27,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:48:27,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:48:27,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:48:27,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:48:27,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:48:27,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:48:27,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:48:27,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:48:27,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:48:27,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:48:27,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:48:27,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:48:27,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:48:27,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:48:27,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:48:27,202 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:48:27,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:48:27,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:48:27,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:48:27,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:48:27,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:48:27,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:48:27,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:48:27,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:48:27,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:48:27,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:48:27,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:48:27,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:48:27,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:48:27,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:48:27,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:48:27,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:48:27,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:48:27,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:48:27,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:48:27,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:48:27,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:48:27,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:48:27,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:48:27,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:48:27,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:48:27,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:48:27,530 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:48:27,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:48:27,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:48:27,545 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:48:27,545 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-12 15:48:27,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7aac3fa2e/4357db857260405aa6f6b0170d06cdac/FLAGe36a3e04d [2020-10-12 15:48:28,140 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:48:28,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-10-12 15:48:28,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7aac3fa2e/4357db857260405aa6f6b0170d06cdac/FLAGe36a3e04d [2020-10-12 15:48:28,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7aac3fa2e/4357db857260405aa6f6b0170d06cdac [2020-10-12 15:48:28,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:48:28,396 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:48:28,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:48:28,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:48:28,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:48:28,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:48:28" (1/1) ... [2020-10-12 15:48:28,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc73a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:28, skipping insertion in model container [2020-10-12 15:48:28,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:48:28" (1/1) ... [2020-10-12 15:48:28,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:48:28,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:48:28,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:48:28,876 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:48:28,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:48:29,011 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:48:29,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29 WrapperNode [2020-10-12 15:48:29,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:48:29,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:48:29,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:48:29,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:48:29,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... [2020-10-12 15:48:29,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... [2020-10-12 15:48:29,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... [2020-10-12 15:48:29,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... [2020-10-12 15:48:29,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... [2020-10-12 15:48:29,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... [2020-10-12 15:48:29,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... [2020-10-12 15:48:29,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:48:29,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:48:29,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:48:29,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:48:29,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:48:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:48:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:48:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:48:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:48:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-12 15:48:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-12 15:48:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-12 15:48:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:48:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:48:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:48:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:48:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:48:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:48:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:48:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:48:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:48:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:48:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:48:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:48:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:48:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:48:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:48:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:48:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:48:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:48:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:48:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:48:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:48:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:48:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-12 15:48:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-12 15:48:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-12 15:48:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:48:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:48:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:48:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:48:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:48:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:48:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:48:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:48:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:48:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:48:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:48:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:48:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:48:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:48:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:48:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:48:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:48:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:48:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:48:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:48:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:48:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:48:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:48:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:48:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:48:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:48:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:48:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:48:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:48:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:48:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:48:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:48:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:48:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:48:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:48:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:48:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:48:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:48:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:48:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:48:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:48:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:48:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:48:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:48:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:48:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:48:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:48:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:48:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:48:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:48:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:48:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:48:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:48:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:48:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:48:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:48:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:48:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:48:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:48:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:48:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:48:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:48:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:48:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:48:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:48:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:48:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:48:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:48:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:48:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:48:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:48:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:48:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:48:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:48:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:48:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:48:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:48:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:48:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:48:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:48:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:48:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:48:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:48:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:48:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:48:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:48:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:48:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:48:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:48:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:48:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:48:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:48:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:48:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:48:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:48:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:48:29,549 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:48:29,736 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:48:29,737 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 15:48:29,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:48:29 BoogieIcfgContainer [2020-10-12 15:48:29,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:48:29,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:48:29,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:48:29,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:48:29,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:48:28" (1/3) ... [2020-10-12 15:48:29,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0eb03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:48:29, skipping insertion in model container [2020-10-12 15:48:29,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:48:29" (2/3) ... [2020-10-12 15:48:29,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0eb03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:48:29, skipping insertion in model container [2020-10-12 15:48:29,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:48:29" (3/3) ... [2020-10-12 15:48:29,751 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-12 15:48:29,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:48:29,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:48:29,787 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:48:29,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:48:29,813 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:48:29,813 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:48:29,813 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:48:29,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:48:29,814 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:48:29,814 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:48:29,814 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:48:29,834 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 15:48:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 15:48:29,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:29,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:29,843 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1184417696, now seen corresponding path program 1 times [2020-10-12 15:48:29,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:29,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425133502] [2020-10-12 15:48:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:48:30,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:48:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-12 15:48:30,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:48:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:30,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:48:30,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:48:30,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:30,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:30,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:30,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:48:30,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:30,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:48:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:30,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425133502] [2020-10-12 15:48:30,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:48:30,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:48:30,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787915004] [2020-10-12 15:48:30,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:48:30,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:30,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:48:30,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:48:30,490 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-12 15:48:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:30,707 INFO L93 Difference]: Finished difference Result 73 states and 103 transitions. [2020-10-12 15:48:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:48:30,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-12 15:48:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:30,719 INFO L225 Difference]: With dead ends: 73 [2020-10-12 15:48:30,719 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 15:48:30,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:48:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 15:48:30,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2020-10-12 15:48:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 15:48:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-12 15:48:30,766 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 15 [2020-10-12 15:48:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:30,767 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-12 15:48:30,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:48:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-12 15:48:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:48:30,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:30,768 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:30,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:48:30,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:30,769 INFO L82 PathProgramCache]: Analyzing trace with hash 771025649, now seen corresponding path program 1 times [2020-10-12 15:48:30,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:30,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022171006] [2020-10-12 15:48:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:30,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:30,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:48:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 15:48:30,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:48:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:48:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:30,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:30,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:30,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:30,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:48:30,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:30,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022171006] [2020-10-12 15:48:30,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:48:30,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:48:30,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227955516] [2020-10-12 15:48:30,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:48:30,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:48:30,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:48:30,947 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-12 15:48:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:31,067 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-12 15:48:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:48:31,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-12 15:48:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:31,069 INFO L225 Difference]: With dead ends: 50 [2020-10-12 15:48:31,069 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 15:48:31,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:48:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 15:48:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-12 15:48:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 15:48:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-12 15:48:31,078 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2020-10-12 15:48:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:31,078 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-12 15:48:31,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:48:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-12 15:48:31,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:48:31,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:31,080 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:31,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:48:31,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:31,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:31,080 INFO L82 PathProgramCache]: Analyzing trace with hash -472715872, now seen corresponding path program 1 times [2020-10-12 15:48:31,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:31,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443857861] [2020-10-12 15:48:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:48:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 15:48:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:48:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:48:31,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:31,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:31,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:48:31,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:31,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:31,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:31,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443857861] [2020-10-12 15:48:31,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:48:31,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:48:31,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947014728] [2020-10-12 15:48:31,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:48:31,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:48:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:48:31,215 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2020-10-12 15:48:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:31,323 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-10-12 15:48:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:48:31,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-12 15:48:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:31,325 INFO L225 Difference]: With dead ends: 48 [2020-10-12 15:48:31,325 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 15:48:31,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:48:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 15:48:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2020-10-12 15:48:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-12 15:48:31,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-12 15:48:31,332 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-10-12 15:48:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:31,333 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-12 15:48:31,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:48:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-12 15:48:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:48:31,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:31,334 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:31,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:48:31,335 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:31,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:31,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1962636917, now seen corresponding path program 1 times [2020-10-12 15:48:31,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:31,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171633827] [2020-10-12 15:48:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:31,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:31,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:48:31,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:48:31,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-12 15:48:31,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:48:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:48:31,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:48:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:48:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:48:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:48:32,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:48:32,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:48:32,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:48:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:48:32,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:48:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:48:32,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:48:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:48:32,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:48:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:48:32,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171633827] [2020-10-12 15:48:32,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:48:32,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:48:32,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926755619] [2020-10-12 15:48:32,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:48:32,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:48:32,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:48:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:48:32,061 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 10 states. [2020-10-12 15:48:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:48:32,298 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-12 15:48:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:48:32,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-12 15:48:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:48:32,302 INFO L225 Difference]: With dead ends: 64 [2020-10-12 15:48:32,302 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 15:48:32,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:48:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 15:48:32,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2020-10-12 15:48:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 15:48:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-12 15:48:32,311 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 23 [2020-10-12 15:48:32,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:48:32,311 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-12 15:48:32,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:48:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-12 15:48:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:48:32,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:48:32,313 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:48:32,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:48:32,313 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:48:32,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:48:32,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1888593434, now seen corresponding path program 1 times [2020-10-12 15:48:32,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:48:32,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977087409] [2020-10-12 15:48:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:48:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:48:32,330 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:48:32,330 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:48:32,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:48:32,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:48:32 BoogieIcfgContainer [2020-10-12 15:48:32,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:48:32,358 INFO L168 Benchmark]: Toolchain (without parser) took 3960.35 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 102.0 MB in the beginning and 129.0 MB in the end (delta: -27.1 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:32,359 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:48:32,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.74 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 171.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:32,361 INFO L168 Benchmark]: Boogie Preprocessor took 64.90 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:32,362 INFO L168 Benchmark]: RCFGBuilder took 663.56 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 124.0 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:32,363 INFO L168 Benchmark]: TraceAbstraction took 2611.86 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 123.3 MB in the beginning and 129.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:48:32,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 614.74 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.8 MB in the beginning and 171.0 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.90 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 663.56 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 124.0 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2611.86 ms. Allocated memory was 203.9 MB in the beginning and 247.5 MB in the end (delta: 43.5 MB). Free memory was 123.3 MB in the beginning and 129.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) [L524] COND FALSE !(a == 0) [L525] p = a [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 [L532] t = (List) malloc(sizeof(struct node)) [L533] COND FALSE !(t == 0) [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a [L539] COND TRUE \read(flag) [L540] EXPR p->h [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 119 SDslu, 270 SDs, 0 SdLazy, 356 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 6238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 4/6 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...