/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=WIDEST --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-ext-properties/simple-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:15:16,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:15:16,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:15:16,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:15:16,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:15:16,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:15:16,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:15:16,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:15:16,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:15:16,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:15:16,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:15:16,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:15:16,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:15:16,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:15:16,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:15:16,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:15:16,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:15:16,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:15:16,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:15:16,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:15:16,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:15:16,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:15:16,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:15:16,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:15:16,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:15:16,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:15:16,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:15:16,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:15:16,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:15:16,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:15:16,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:15:16,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:15:16,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:15:16,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:15:16,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:15:16,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:15:16,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:15:16,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:15:16,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:15:16,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:15:16,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:15:16,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:15:16,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:15:16,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:15:16,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:15:16,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:15:16,706 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:15:16,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:15:16,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:15:16,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:15:16,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:15:16,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:15:16,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:15:16,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:15:16,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:15:16,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:15:16,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:15:16,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:15:16,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:15:16,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:15:16,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:15:16,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:15:16,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:15:16,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:16,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:15:16,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:15:16,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:15:16,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:15:16,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:15:16,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:15:16,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:15:16,711 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:15:17,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:15:17,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:15:17,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:15:17,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:15:17,198 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:15:17,199 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-09-25 03:15:17,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b446509/dedc4e9a15594954b07f91ce1be3e195/FLAGa259f95fe [2020-09-25 03:15:17,830 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:15:17,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-09-25 03:15:17,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b446509/dedc4e9a15594954b07f91ce1be3e195/FLAGa259f95fe [2020-09-25 03:15:18,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7b446509/dedc4e9a15594954b07f91ce1be3e195 [2020-09-25 03:15:18,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:15:18,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:15:18,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:18,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:15:18,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:15:18,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ea73e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18, skipping insertion in model container [2020-09-25 03:15:18,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:15:18,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:15:18,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:18,787 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:15:18,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:18,918 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:15:18,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18 WrapperNode [2020-09-25 03:15:18,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:18,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:15:18,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:15:18,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:15:18,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... [2020-09-25 03:15:18,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:15:18,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:15:18,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:15:18,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:15:18,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:15:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:15:19,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:15:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:15:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 03:15:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 03:15:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 03:15:19,067 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 03:15:19,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:15:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:15:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:15:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:15:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:15:19,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:15:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:15:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:15:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:15:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:15:19,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:15:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:15:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:15:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:15:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:15:19,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:15:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:15:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:15:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:15:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:15:19,071 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:15:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 03:15:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 03:15:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 03:15:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:15:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:15:19,072 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:15:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:15:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:15:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:15:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:15:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:15:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:15:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:15:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:15:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:15:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:15:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:15:19,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:15:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:15:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:15:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:15:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:15:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:15:19,075 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:15:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:15:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:15:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:15:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:15:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:15:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:15:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:15:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:15:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:15:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:15:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:15:19,077 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:15:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:15:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:15:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:15:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:15:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:15:19,078 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:15:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:15:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:15:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:15:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:15:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:15:19,079 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:15:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:15:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:15:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:15:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:15:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:15:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:15:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:15:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:15:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:15:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:15:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:15:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:15:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:15:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:15:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:15:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:15:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:15:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:15:19,082 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:15:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:15:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:15:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:15:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:15:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:15:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:15:19,083 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:15:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:15:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:15:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:15:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:15:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:15:19,084 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:15:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:15:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:15:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:15:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:15:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:15:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:15:19,085 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:15:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:15:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:15:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 03:15:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:15:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:15:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:15:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:15:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:15:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:15:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:15:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:15:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:15:19,440 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 03:15:19,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:15:19,639 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:15:19,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:19 BoogieIcfgContainer [2020-09-25 03:15:19,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:15:19,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:15:19,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:15:19,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:15:19,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:18" (1/3) ... [2020-09-25 03:15:19,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106cf50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:19, skipping insertion in model container [2020-09-25 03:15:19,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:18" (2/3) ... [2020-09-25 03:15:19,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106cf50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:19, skipping insertion in model container [2020-09-25 03:15:19,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:19" (3/3) ... [2020-09-25 03:15:19,653 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2020-09-25 03:15:19,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:15:19,671 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:15:19,693 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:15:19,717 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:15:19,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:15:19,718 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:15:19,718 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:15:19,718 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:15:19,718 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:15:19,718 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:15:19,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:15:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-09-25 03:15:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 03:15:19,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:19,746 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] [2020-09-25 03:15:19,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:19,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1527556188, now seen corresponding path program 1 times [2020-09-25 03:15:19,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:19,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354884411] [2020-09-25 03:15:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 03:15:20,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:20,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 03:15:20,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:15:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:15:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:20,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:15:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:20,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:20,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354884411] [2020-09-25 03:15:20,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:20,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:15:20,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430822675] [2020-09-25 03:15:20,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:15:20,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:20,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:15:20,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:15:20,209 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-09-25 03:15:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:20,391 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2020-09-25 03:15:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:15:20,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 03:15:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:20,404 INFO L225 Difference]: With dead ends: 95 [2020-09-25 03:15:20,404 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 03:15:20,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:15:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 03:15:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 03:15:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:15:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-09-25 03:15:20,455 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 23 [2020-09-25 03:15:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:20,455 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-09-25 03:15:20,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:15:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-09-25 03:15:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 03:15:20,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:20,457 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] [2020-09-25 03:15:20,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:15:20,458 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:20,458 INFO L82 PathProgramCache]: Analyzing trace with hash 2054563523, now seen corresponding path program 1 times [2020-09-25 03:15:20,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:20,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701330462] [2020-09-25 03:15:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:15:20,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-25 03:15:20,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:15:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:15:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:15:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:20,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:20,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:20,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:20,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:15:20,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:15:20,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:20,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701330462] [2020-09-25 03:15:20,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:20,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:15:20,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057704910] [2020-09-25 03:15:20,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:15:20,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:20,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:15:20,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:15:20,895 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 5 states. [2020-09-25 03:15:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:21,038 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2020-09-25 03:15:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:15:21,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 03:15:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:21,041 INFO L225 Difference]: With dead ends: 122 [2020-09-25 03:15:21,041 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 03:15:21,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 03:15:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2020-09-25 03:15:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:15:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-09-25 03:15:21,052 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 27 [2020-09-25 03:15:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:21,052 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-09-25 03:15:21,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:15:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-09-25 03:15:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 03:15:21,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:21,054 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] [2020-09-25 03:15:21,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:15:21,054 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:21,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2100491616, now seen corresponding path program 1 times [2020-09-25 03:15:21,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:21,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683798272] [2020-09-25 03:15:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:15:21,074 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:15:21,075 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:15:21,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:15:21,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:15:21 BoogieIcfgContainer [2020-09-25 03:15:21,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:15:21,103 INFO L168 Benchmark]: Toolchain (without parser) took 2969.70 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 102.4 MB in the beginning and 139.2 MB in the end (delta: -36.8 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,104 INFO L168 Benchmark]: CDTParser took 0.22 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:15:21,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.44 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 169.9 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,105 INFO L168 Benchmark]: Boogie Preprocessor took 77.24 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 167.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,106 INFO L168 Benchmark]: RCFGBuilder took 646.67 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 119.5 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,107 INFO L168 Benchmark]: TraceAbstraction took 1453.93 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 119.5 MB in the beginning and 139.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:21,111 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.44 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 169.9 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.24 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 167.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 646.67 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 119.5 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1453.93 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 119.5 MB in the beginning and 139.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); [L522] COND FALSE !(a == 0) [L523] List t; [L524] List p = a; [L525] int i = 0; [L526] i < 30 && __VERIFIER_nondet_int() [L526] i < 30 && __VERIFIER_nondet_int() [L526] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L534] p->h = i [L535] p->n = 0 [L536] p = a [L537] i = 0 [L538] COND TRUE p!=0 [L539] EXPR p->h [L539] COND TRUE p->h != 1 [L540] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 38 SDslu, 88 SDs, 0 SdLazy, 134 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, 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, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...