/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:07:31,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:07:31,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:07:31,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:07:31,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:07:31,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:07:31,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:07:31,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:07:31,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:07:31,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:07:31,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:07:31,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:07:31,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:07:31,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:07:31,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:07:31,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:07:31,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:07:31,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:07:31,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:07:31,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:07:31,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:07:31,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:07:31,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:07:31,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:07:31,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:07:31,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:07:31,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:07:31,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:07:31,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:07:31,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:07:31,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:07:31,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:07:31,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:07:31,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:07:31,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:07:31,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:07:31,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:07:31,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:07:31,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:07:31,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:07:31,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:07:31,411 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 02:07:31,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:07:31,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:07:31,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:07:31,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:07:31,462 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:07:31,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:07:31,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:07:31,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:07:31,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:07:31,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:07:31,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:07:31,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:07:31,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:07:31,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:07:31,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:07:31,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:07:31,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:07:31,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:07:31,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:07:31,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:07:31,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:07:31,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:31,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:07:31,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:07:31,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:07:31,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:07:31,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:07:31,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:07:31,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:07:31,467 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:07:31,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:07:31,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:07:31,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:07:31,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:07:31,988 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:07:31,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 02:07:32,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/548c7d6a8/84ed2169e4d1483bb166016ce424f0cf/FLAG3e1ca652b [2020-09-25 02:07:32,710 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:07:32,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 02:07:32,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/548c7d6a8/84ed2169e4d1483bb166016ce424f0cf/FLAG3e1ca652b [2020-09-25 02:07:32,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/548c7d6a8/84ed2169e4d1483bb166016ce424f0cf [2020-09-25 02:07:32,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:07:33,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:07:33,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:33,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:07:33,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:07:33,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:32" (1/1) ... [2020-09-25 02:07:33,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33, skipping insertion in model container [2020-09-25 02:07:33,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:32" (1/1) ... [2020-09-25 02:07:33,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:07:33,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:07:33,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:33,585 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:07:33,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:33,718 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:07:33,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33 WrapperNode [2020-09-25 02:07:33,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:33,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:07:33,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:07:33,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:07:33,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (1/1) ... [2020-09-25 02:07:33,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:07:33,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:07:33,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:07:33,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:07:33,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (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 02:07:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:07:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:07:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:07:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:07:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:07:33,882 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:07:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:07:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:07:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:07:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:07:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:07:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:07:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:07:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:07:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:07:33,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:07:33,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:07:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:07:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:07:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:07:33,889 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:07:33,889 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:07:33,890 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:07:33,890 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:07:33,891 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:07:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:07:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:07:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:07:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:07:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:07:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:07:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:07:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:07:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:07:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:07:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:07:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:07:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:07:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:07:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:07:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:07:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:07:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:07:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:07:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:07:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:07:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:07:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:07:33,897 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:07:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:07:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:07:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:07:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:07:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:07:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:07:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:07:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:07:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 02:07:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:07:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:07:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:07:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:07:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:07:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:07:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:07:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:07:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:07:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:07:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:07:33,902 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:07:33,903 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:07:33,904 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:07:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:07:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:07:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:07:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:07:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:07:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:07:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:07:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:07:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:07:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:07:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:07:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:07:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:07:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:07:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:07:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:07:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:07:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:07:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:07:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:07:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:07:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:07:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:07:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:07:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:07:33,910 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:07:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:07:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:07:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:07:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:07:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:07:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:07:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:07:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:07:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:07:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:07:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:07:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:07:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:07:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:07:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:07:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:07:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:07:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:07:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:07:34,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:07:34,487 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-25 02:07:34,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:34 BoogieIcfgContainer [2020-09-25 02:07:34,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:07:34,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:07:34,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:07:34,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:07:34,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:07:32" (1/3) ... [2020-09-25 02:07:34,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa9628f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:34, skipping insertion in model container [2020-09-25 02:07:34,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:33" (2/3) ... [2020-09-25 02:07:34,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa9628f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:34, skipping insertion in model container [2020-09-25 02:07:34,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:34" (3/3) ... [2020-09-25 02:07:34,507 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-09-25 02:07:34,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:07:34,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 02:07:34,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 02:07:34,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:07:34,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:07:34,597 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:07:34,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:07:34,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:07:34,598 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:07:34,598 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:07:34,598 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:07:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 02:07:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 02:07:34,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:34,655 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 02:07:34,657 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-09-25 02:07:34,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:34,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590398917] [2020-09-25 02:07:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:35,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:35,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:07:35,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:35,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-09-25 02:07:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 02:07:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:07:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:35,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:35,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:35,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:35,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:07:35,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:35,562 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 02:07:35,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590398917] [2020-09-25 02:07:35,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:35,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:07:35,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242232657] [2020-09-25 02:07:35,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:07:35,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:35,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:07:35,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:07:35,595 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-09-25 02:07:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:35,907 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-09-25 02:07:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:07:35,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-25 02:07:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:35,933 INFO L225 Difference]: With dead ends: 189 [2020-09-25 02:07:35,933 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 02:07:35,944 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 02:07:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 02:07:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-09-25 02:07:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 02:07:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-09-25 02:07:36,001 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 26 [2020-09-25 02:07:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:36,002 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-09-25 02:07:36,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:07:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-09-25 02:07:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 02:07:36,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:36,004 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 02:07:36,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:07:36,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:36,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:36,005 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-09-25 02:07:36,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:36,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071002296] [2020-09-25 02:07:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:36,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:36,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:07:36,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:36,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-09-25 02:07:36,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:36,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:07:36,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:07:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:07:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:37,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:37,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:37,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:07:37,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:37,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:37,056 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 02:07:37,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071002296] [2020-09-25 02:07:37,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:37,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:07:37,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290909402] [2020-09-25 02:07:37,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:07:37,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:37,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:07:37,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:07:37,065 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 8 states. [2020-09-25 02:07:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:37,740 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2020-09-25 02:07:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:07:37,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-25 02:07:37,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:37,745 INFO L225 Difference]: With dead ends: 161 [2020-09-25 02:07:37,745 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 02:07:37,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:07:37,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 02:07:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 88. [2020-09-25 02:07:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 02:07:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-25 02:07:37,775 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 27 [2020-09-25 02:07:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:37,775 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-25 02:07:37,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:07:37,776 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-25 02:07:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 02:07:37,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:37,780 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] [2020-09-25 02:07:37,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:07:37,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:37,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2098857180, now seen corresponding path program 1 times [2020-09-25 02:07:37,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:37,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256314035] [2020-09-25 02:07:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:38,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:38,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 02:07:38,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 02:07:38,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:07:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:07:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:07:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:38,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:38,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:38,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:07:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:38,134 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 02:07:38,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256314035] [2020-09-25 02:07:38,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:38,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:07:38,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28353043] [2020-09-25 02:07:38,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:07:38,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:38,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:07:38,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:07:38,138 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 6 states. [2020-09-25 02:07:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:38,380 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2020-09-25 02:07:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:07:38,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-25 02:07:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:38,384 INFO L225 Difference]: With dead ends: 155 [2020-09-25 02:07:38,384 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 02:07:38,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:07:38,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 02:07:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 86. [2020-09-25 02:07:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 02:07:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-09-25 02:07:38,405 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 28 [2020-09-25 02:07:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:38,409 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-09-25 02:07:38,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:07:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-09-25 02:07:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:07:38,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:38,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:38,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:07:38,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:38,412 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-09-25 02:07:38,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:38,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693413235] [2020-09-25 02:07:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:40,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:40,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 02:07:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:07:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1936 [2020-09-25 02:07:40,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:07:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 02:07:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 02:07:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:40,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:40,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:40,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:07:40,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:40,462 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 02:07:40,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693413235] [2020-09-25 02:07:40,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:40,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:07:40,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687767779] [2020-09-25 02:07:40,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:07:40,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:40,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:07:40,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:07:40,465 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 6 states. [2020-09-25 02:07:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:40,690 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-09-25 02:07:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:07:40,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 02:07:40,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:40,693 INFO L225 Difference]: With dead ends: 86 [2020-09-25 02:07:40,693 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 02:07:40,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:07:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 02:07:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-25 02:07:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 02:07:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-09-25 02:07:40,703 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 35 [2020-09-25 02:07:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:40,703 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-09-25 02:07:40,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:07:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-09-25 02:07:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:07:40,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:40,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:40,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:07:40,706 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-09-25 02:07:40,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:40,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397227327] [2020-09-25 02:07:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:41,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 02:07:41,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-09-25 02:07:41,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:07:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:07:41,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 02:07:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:41,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:41,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:41,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:41,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:41,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:07:41,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:41,914 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 02:07:41,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397227327] [2020-09-25 02:07:41,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:41,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 02:07:41,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893133732] [2020-09-25 02:07:41,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:07:41,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:41,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:07:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:07:41,917 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 14 states. [2020-09-25 02:07:42,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:42,840 INFO L93 Difference]: Finished difference Result 224 states and 230 transitions. [2020-09-25 02:07:42,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 02:07:42,840 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-25 02:07:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:42,842 INFO L225 Difference]: With dead ends: 224 [2020-09-25 02:07:42,842 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 02:07:42,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-09-25 02:07:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 02:07:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 100. [2020-09-25 02:07:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 02:07:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-09-25 02:07:42,853 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 35 [2020-09-25 02:07:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:42,853 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-09-25 02:07:42,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:07:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-09-25 02:07:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 02:07:42,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:42,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:42,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:07:42,856 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:42,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:42,856 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-09-25 02:07:42,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:42,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356052435] [2020-09-25 02:07:42,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:07:42,883 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:07:42,884 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:07:42,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:07:42,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:07:42 BoogieIcfgContainer [2020-09-25 02:07:42,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:07:42,914 INFO L168 Benchmark]: Toolchain (without parser) took 9912.40 ms. Allocated memory was 141.0 MB in the beginning and 321.4 MB in the end (delta: 180.4 MB). Free memory was 102.6 MB in the beginning and 249.4 MB in the end (delta: -146.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:42,915 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:07:42,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.94 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 171.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:42,917 INFO L168 Benchmark]: Boogie Preprocessor took 78.04 ms. Allocated memory is still 203.9 MB. Free memory was 171.1 MB in the beginning and 168.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:42,918 INFO L168 Benchmark]: RCFGBuilder took 694.23 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 117.1 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:07:42,918 INFO L168 Benchmark]: TraceAbstraction took 8415.88 ms. Allocated memory was 203.9 MB in the beginning and 321.4 MB in the end (delta: 117.4 MB). Free memory was 117.1 MB in the beginning and 249.4 MB in the end (delta: -132.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:07:42,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.94 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 171.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.04 ms. Allocated memory is still 203.9 MB. Free memory was 171.1 MB in the beginning and 168.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 694.23 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 117.1 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8415.88 ms. Allocated memory was 203.9 MB in the beginning and 321.4 MB in the end (delta: 117.4 MB). Free memory was 117.1 MB in the beginning and 249.4 MB in the end (delta: -132.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 435 SDtfs, 875 SDslu, 906 SDs, 0 SdLazy, 971 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred 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, 5 MinimizatonAttempts, 219 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 19793 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...