/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-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:13:37,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:13:37,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:13:37,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:13:37,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:13:37,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:13:37,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:13:37,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:13:37,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:13:37,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:13:37,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:13:37,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:13:37,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:13:37,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:13:37,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:13:37,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:13:37,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:13:37,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:13:37,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:13:37,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:13:37,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:13:37,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:13:37,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:13:37,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:13:37,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:13:37,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:13:37,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:13:37,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:13:37,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:13:37,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:13:37,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:13:37,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:13:37,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:13:37,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:13:37,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:13:37,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:13:37,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:13:37,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:13:37,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:13:37,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:13:37,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:13:37,483 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 03:13:37,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:13:37,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:13:37,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:13:37,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:13:37,513 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:13:37,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:13:37,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:13:37,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:13:37,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:13:37,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:13:37,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:13:37,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:13:37,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:13:37,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:13:37,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:13:37,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:13:37,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:13:37,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:13:37,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:13:37,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:13:37,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:13:37,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:37,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:13:37,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:13:37,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:13:37,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:13:37,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:13:37,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:13:37,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:13:37,518 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 03:13:38,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:13:38,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:13:38,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:13:38,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:13:38,060 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:13:38,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 03:13:38,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1f5fe0a/fdb1cd2e95c14bb194d30066cc41b804/FLAG496bd477d [2020-09-25 03:13:38,773 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:13:38,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-25 03:13:38,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1f5fe0a/fdb1cd2e95c14bb194d30066cc41b804/FLAG496bd477d [2020-09-25 03:13:39,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1f5fe0a/fdb1cd2e95c14bb194d30066cc41b804 [2020-09-25 03:13:39,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:13:39,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:13:39,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:39,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:13:39,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:13:39,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eef8159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39, skipping insertion in model container [2020-09-25 03:13:39,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:13:39,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:13:39,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:39,574 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:13:39,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:13:39,707 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:13:39,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39 WrapperNode [2020-09-25 03:13:39,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:13:39,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:13:39,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:13:39,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:13:39,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... [2020-09-25 03:13:39,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:13:39,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:13:39,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:13:39,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:13:39,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:13:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:13:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:13:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:13:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:13:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 03:13:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 03:13:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 03:13:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 03:13:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:13:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:13:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:13:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:13:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:13:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:13:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:13:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:13:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:13:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:13:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:13:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:13:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:13:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:13:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:13:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:13:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:13:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:13:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:13:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:13:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:13:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 03:13:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 03:13:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 03:13:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:13:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:13:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:13:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:13:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:13:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:13:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:13:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:13:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:13:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:13:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:13:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:13:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:13:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:13:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:13:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:13:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:13:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:13:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:13:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:13:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:13:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:13:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:13:39,881 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:13:39,881 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:13:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:13:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:13:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:13:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:13:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:13:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:13:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:13:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:13:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:13:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:13:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:13:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:13:39,885 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:13:39,885 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:13:39,886 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:13:39,887 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:13:39,887 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:13:39,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:13:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:13:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:13:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:13:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:13:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:13:39,888 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:13:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:13:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:13:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:13:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:13:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:13:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:13:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:13:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:13:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:13:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:13:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:13:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:13:39,890 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:13:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:13:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:13:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:13:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:13:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:13:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:13:39,891 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:13:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:13:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:13:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:13:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:13:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:13:39,892 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:13:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:13:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:13:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:13:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:13:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:13:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:13:39,893 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:13:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:13:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:13:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:13:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:13:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 03:13:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:13:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:13:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:13:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:13:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:13:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:13:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:13:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:13:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:13:40,276 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 03:13:40,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:13:40,467 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:13:40,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:40 BoogieIcfgContainer [2020-09-25 03:13:40,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:13:40,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:13:40,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:13:40,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:13:40,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:13:39" (1/3) ... [2020-09-25 03:13:40,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163b31c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:40, skipping insertion in model container [2020-09-25 03:13:40,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:13:39" (2/3) ... [2020-09-25 03:13:40,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163b31c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:13:40, skipping insertion in model container [2020-09-25 03:13:40,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:13:40" (3/3) ... [2020-09-25 03:13:40,483 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-09-25 03:13:40,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:13:40,509 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:13:40,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:13:40,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:13:40,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:13:40,560 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:13:40,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:13:40,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:13:40,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:13:40,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:13:40,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:13:40,587 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-25 03:13:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 03:13:40,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:40,598 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] [2020-09-25 03:13:40,598 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:40,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-09-25 03:13:40,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:40,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391697889] [2020-09-25 03:13:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:41,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:13:41,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:13:41,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-25 03:13:41,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:13:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:13:41,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 03:13:41,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:41,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:41,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:41,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:13:41,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:41,355 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 03:13:41,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391697889] [2020-09-25 03:13:41,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:41,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:41,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66410484] [2020-09-25 03:13:41,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:41,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:41,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:41,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:41,388 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 7 states. [2020-09-25 03:13:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:41,751 INFO L93 Difference]: Finished difference Result 165 states and 200 transitions. [2020-09-25 03:13:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:13:41,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-09-25 03:13:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:41,766 INFO L225 Difference]: With dead ends: 165 [2020-09-25 03:13:41,766 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 03:13:41,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:13:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 03:13:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-09-25 03:13:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 03:13:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-25 03:13:41,828 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 26 [2020-09-25 03:13:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:41,829 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-25 03:13:41,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-25 03:13:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:13:41,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:41,831 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:41,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:13:41,831 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-09-25 03:13:41,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:41,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723820491] [2020-09-25 03:13:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:42,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:13:42,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 03:13:42,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:13:42,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:13:42,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:42,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:42,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:42,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:42,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:13:42,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:42,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:42,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723820491] [2020-09-25 03:13:42,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:42,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:42,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584246958] [2020-09-25 03:13:42,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:42,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:42,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:42,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:42,119 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-09-25 03:13:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:42,386 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-09-25 03:13:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:13:42,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 03:13:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:42,389 INFO L225 Difference]: With dead ends: 117 [2020-09-25 03:13:42,389 INFO L226 Difference]: Without dead ends: 103 [2020-09-25 03:13:42,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-25 03:13:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-09-25 03:13:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 03:13:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-25 03:13:42,401 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-09-25 03:13:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:42,401 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-25 03:13:42,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:42,402 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-25 03:13:42,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 03:13:42,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:42,403 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:42,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:13:42,404 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:42,405 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-09-25 03:13:42,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:42,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464092360] [2020-09-25 03:13:42,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:42,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:42,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:13:42,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 03:13:42,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:13:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:13:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:13:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:13:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:13:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:13:42,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:13:42,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:13:42,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:13:42,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:13:42,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:13:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:13:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:13:42,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:13:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:13:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:13:42,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464092360] [2020-09-25 03:13:42,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:13:42,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:13:42,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652496528] [2020-09-25 03:13:42,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:13:42,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:13:42,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:13:42,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:13:42,669 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-09-25 03:13:42,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:13:42,878 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-09-25 03:13:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:13:42,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 03:13:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:13:42,880 INFO L225 Difference]: With dead ends: 100 [2020-09-25 03:13:42,880 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 03:13:42,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:13:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 03:13:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-09-25 03:13:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 03:13:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-25 03:13:42,888 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-09-25 03:13:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:13:42,888 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-25 03:13:42,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:13:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-25 03:13:42,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 03:13:42,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:13:42,890 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:13:42,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:13:42,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:13:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:13:42,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-09-25 03:13:42,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:13:42,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137111814] [2020-09-25 03:13:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:13:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:13:42,918 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:13:42,918 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:13:42,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:13:42,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:13:42 BoogieIcfgContainer [2020-09-25 03:13:42,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:13:42,948 INFO L168 Benchmark]: Toolchain (without parser) took 3901.73 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 101.8 MB in the beginning and 171.9 MB in the end (delta: -70.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:42,949 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-25 03:13:42,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.70 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 169.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:42,951 INFO L168 Benchmark]: Boogie Preprocessor took 73.95 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:42,952 INFO L168 Benchmark]: RCFGBuilder took 689.66 ms. Allocated memory is still 202.9 MB. Free memory was 166.3 MB in the beginning and 119.6 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:13:42,953 INFO L168 Benchmark]: TraceAbstraction took 2470.22 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 119.6 MB in the beginning and 171.9 MB in the end (delta: -52.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:13:42,957 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 654.70 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 169.3 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.95 ms. Allocated memory is still 202.9 MB. Free memory was 169.3 MB in the beginning and 166.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 689.66 ms. Allocated memory is still 202.9 MB. Free memory was 166.3 MB in the beginning and 119.6 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2470.22 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 119.6 MB in the beginning and 171.9 MB in the end (delta: -52.3 MB). There was no memory consumed. 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, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 153 SDtfs, 234 SDslu, 481 SDs, 0 SdLazy, 471 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=1, 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, 3 MinimizatonAttempts, 121 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 7960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 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...