/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:18,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:18,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:18,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:18,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:18,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:18,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:18,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:18,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:18,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:18,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:18,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:18,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:18,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:18,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:18,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:18,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:18,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:18,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:18,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:18,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:18,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:18,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:18,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:18,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:18,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:18,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:18,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:18,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:18,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:18,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:18,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:18,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:18,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:18,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:18,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:18,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:18,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:18,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:18,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:18,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:18,879 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 12:20:18,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:18,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:18,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:18,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:18,907 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:18,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:18,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:18,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:18,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:18,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:18,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:18,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:18,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:18,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:18,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:18,910 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:18,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:18,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:18,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:18,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:18,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:18,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:18,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:18,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:18,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:18,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:18,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:18,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:18,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:18,912 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:20:19,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:19,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:19,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:19,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:19,466 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:19,467 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 12:20:19,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fad6585a/43c75c1995454ea280b01e76459de452/FLAG473ce6ed4 [2020-09-25 12:20:20,190 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:20,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 12:20:20,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fad6585a/43c75c1995454ea280b01e76459de452/FLAG473ce6ed4 [2020-09-25 12:20:20,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1fad6585a/43c75c1995454ea280b01e76459de452 [2020-09-25 12:20:20,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:20,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:20,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:20,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:20,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:20,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:20" (1/1) ... [2020-09-25 12:20:20,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33dfb059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:20, skipping insertion in model container [2020-09-25 12:20:20,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:20" (1/1) ... [2020-09-25 12:20:20,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:20,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:21,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:21,019 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:21,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:21,164 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:21,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21 WrapperNode [2020-09-25 12:20:21,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:21,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:21,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:21,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:21,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (1/1) ... [2020-09-25 12:20:21,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (1/1) ... [2020-09-25 12:20:21,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (1/1) ... [2020-09-25 12:20:21,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (1/1) ... [2020-09-25 12:20:21,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (1/1) ... [2020-09-25 12:20:21,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (1/1) ... [2020-09-25 12:20:21,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (1/1) ... [2020-09-25 12:20:21,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:21,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:21,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:21,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:21,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (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 12:20:21,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:21,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:21,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:21,336 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:21,337 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:21,341 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:21,342 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:21,343 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:21,344 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:21,345 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:20:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:21,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:20:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:20:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:21,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:21,988 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:21,989 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 12:20:21,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:21 BoogieIcfgContainer [2020-09-25 12:20:21,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:22,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:22,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:22,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:22,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:20" (1/3) ... [2020-09-25 12:20:22,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d48f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:22, skipping insertion in model container [2020-09-25 12:20:22,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:21" (2/3) ... [2020-09-25 12:20:22,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d48f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:22, skipping insertion in model container [2020-09-25 12:20:22,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:21" (3/3) ... [2020-09-25 12:20:22,015 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 12:20:22,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:22,039 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 12:20:22,064 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 12:20:22,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:22,113 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:22,113 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:22,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:22,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:22,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:22,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:22,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 12:20:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 12:20:22,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:22,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:22,175 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 12:20:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:22,184 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 12:20:22,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:22,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59183575] [2020-09-25 12:20:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:22,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:20:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 12:20:22,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:22,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:20:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:20:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:22,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:20:22,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:22,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:22,900 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 12:20:22,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59183575] [2020-09-25 12:20:22,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:22,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:22,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621765597] [2020-09-25 12:20:22,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:22,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:22,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:22,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:22,933 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 6 states. [2020-09-25 12:20:23,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:23,546 INFO L93 Difference]: Finished difference Result 390 states and 486 transitions. [2020-09-25 12:20:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:20:23,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-25 12:20:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:23,580 INFO L225 Difference]: With dead ends: 390 [2020-09-25 12:20:23,581 INFO L226 Difference]: Without dead ends: 246 [2020-09-25 12:20:23,591 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 12:20:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-25 12:20:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 142. [2020-09-25 12:20:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-25 12:20:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-09-25 12:20:23,657 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 18 [2020-09-25 12:20:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:23,658 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-09-25 12:20:23,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-09-25 12:20:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 12:20:23,668 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:23,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:23,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:23,669 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 12:20:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:23,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1753263237, now seen corresponding path program 1 times [2020-09-25 12:20:23,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:23,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847244894] [2020-09-25 12:20:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:26,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 12:20:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:20:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2925 [2020-09-25 12:20:26,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:26,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:20:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:20:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:20:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:20:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:26,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:26,810 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 12:20:26,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847244894] [2020-09-25 12:20:26,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:26,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:26,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765643337] [2020-09-25 12:20:26,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:26,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:26,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:26,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:26,819 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 7 states. [2020-09-25 12:20:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:27,244 INFO L93 Difference]: Finished difference Result 309 states and 335 transitions. [2020-09-25 12:20:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:20:27,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 12:20:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:27,260 INFO L225 Difference]: With dead ends: 309 [2020-09-25 12:20:27,260 INFO L226 Difference]: Without dead ends: 224 [2020-09-25 12:20:27,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:20:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-25 12:20:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-09-25 12:20:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 12:20:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2020-09-25 12:20:27,284 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 43 [2020-09-25 12:20:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:27,285 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2020-09-25 12:20:27,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2020-09-25 12:20:27,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:20:27,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:27,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:27,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:27,294 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 12:20:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:27,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1161635121, now seen corresponding path program 1 times [2020-09-25 12:20:27,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:27,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684340391] [2020-09-25 12:20:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:27,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:27,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:27,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:31,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:31,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 12:20:31,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:20:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4037 [2020-09-25 12:20:31,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:31,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:20:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:20:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:20:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:31,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:31,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:31,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:31,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:31,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:31,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:31,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:31,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:31,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:31,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684340391] [2020-09-25 12:20:31,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:31,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:31,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085686285] [2020-09-25 12:20:31,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:31,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:31,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:31,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:31,520 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand 7 states. [2020-09-25 12:20:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:31,914 INFO L93 Difference]: Finished difference Result 287 states and 309 transitions. [2020-09-25 12:20:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:20:31,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 12:20:31,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:31,917 INFO L225 Difference]: With dead ends: 287 [2020-09-25 12:20:31,917 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 12:20:31,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:20:31,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 12:20:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 162. [2020-09-25 12:20:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 12:20:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2020-09-25 12:20:31,957 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 56 [2020-09-25 12:20:31,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:31,957 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2020-09-25 12:20:31,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2020-09-25 12:20:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 12:20:31,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:31,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:31,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:20:31,960 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 12:20:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:31,961 INFO L82 PathProgramCache]: Analyzing trace with hash 964312838, now seen corresponding path program 1 times [2020-09-25 12:20:31,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:31,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764079815] [2020-09-25 12:20:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:31,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:36,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 12:20:36,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4240 [2020-09-25 12:20:36,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:36,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:20:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:36,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:36,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:36,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:36,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:36,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,324 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 12:20:36,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764079815] [2020-09-25 12:20:36,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:36,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:20:36,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464625480] [2020-09-25 12:20:36,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:36,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:36,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:36,327 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 7 states. [2020-09-25 12:20:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:36,742 INFO L93 Difference]: Finished difference Result 308 states and 328 transitions. [2020-09-25 12:20:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:20:36,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-25 12:20:36,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:36,745 INFO L225 Difference]: With dead ends: 308 [2020-09-25 12:20:36,745 INFO L226 Difference]: Without dead ends: 264 [2020-09-25 12:20:36,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:20:36,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-25 12:20:36,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 164. [2020-09-25 12:20:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 12:20:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2020-09-25 12:20:36,757 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 59 [2020-09-25 12:20:36,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:36,757 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2020-09-25 12:20:36,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2020-09-25 12:20:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 12:20:36,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:36,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:36,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:20:36,760 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 12:20:36,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:36,760 INFO L82 PathProgramCache]: Analyzing trace with hash -70417469, now seen corresponding path program 1 times [2020-09-25 12:20:36,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:36,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133960162] [2020-09-25 12:20:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:36,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:20:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-09-25 12:20:37,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:37,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:20:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 12:20:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:38,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:38,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:20:38,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:38,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:38,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:38,099 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 12:20:38,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133960162] [2020-09-25 12:20:38,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:38,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 12:20:38,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927782054] [2020-09-25 12:20:38,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:20:38,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:38,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:20:38,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:20:38,102 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 13 states. [2020-09-25 12:20:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:39,174 INFO L93 Difference]: Finished difference Result 282 states and 298 transitions. [2020-09-25 12:20:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:20:39,175 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-09-25 12:20:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:39,178 INFO L225 Difference]: With dead ends: 282 [2020-09-25 12:20:39,178 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 12:20:39,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:20:39,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 12:20:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 191. [2020-09-25 12:20:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 12:20:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 204 transitions. [2020-09-25 12:20:39,190 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 204 transitions. Word has length 61 [2020-09-25 12:20:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:39,191 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 204 transitions. [2020-09-25 12:20:39,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:20:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 204 transitions. [2020-09-25 12:20:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 12:20:39,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:39,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:39,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:20:39,193 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 12:20:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:39,193 INFO L82 PathProgramCache]: Analyzing trace with hash 2033546672, now seen corresponding path program 1 times [2020-09-25 12:20:39,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:39,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109493000] [2020-09-25 12:20:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 12:20:41,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2158 [2020-09-25 12:20:41,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:20:41,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:41,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 12:20:41,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:20:41,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,882 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 12:20:41,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109493000] [2020-09-25 12:20:41,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:41,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 12:20:41,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861011227] [2020-09-25 12:20:41,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:20:41,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:41,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:20:41,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:41,887 INFO L87 Difference]: Start difference. First operand 191 states and 204 transitions. Second operand 14 states. [2020-09-25 12:20:42,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:42,999 INFO L93 Difference]: Finished difference Result 280 states and 296 transitions. [2020-09-25 12:20:43,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:20:43,000 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-09-25 12:20:43,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:43,002 INFO L225 Difference]: With dead ends: 280 [2020-09-25 12:20:43,002 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 12:20:43,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:20:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 12:20:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 191. [2020-09-25 12:20:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 12:20:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 203 transitions. [2020-09-25 12:20:43,013 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 203 transitions. Word has length 62 [2020-09-25 12:20:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:43,014 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 203 transitions. [2020-09-25 12:20:43,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:20:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 203 transitions. [2020-09-25 12:20:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 12:20:43,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:43,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:43,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:20:43,016 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:43,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:43,016 INFO L82 PathProgramCache]: Analyzing trace with hash -411491553, now seen corresponding path program 1 times [2020-09-25 12:20:43,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:43,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556481281] [2020-09-25 12:20:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:48,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:48,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 12:20:48,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:20:48,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:48,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:20:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:48,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:20:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:48,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:48,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:48,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:48,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:48,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556481281] [2020-09-25 12:20:48,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:48,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:20:48,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541789411] [2020-09-25 12:20:48,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:20:48,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:48,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:20:48,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:20:48,276 INFO L87 Difference]: Start difference. First operand 191 states and 203 transitions. Second operand 15 states. [2020-09-25 12:20:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:49,522 INFO L93 Difference]: Finished difference Result 486 states and 520 transitions. [2020-09-25 12:20:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:20:49,523 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-09-25 12:20:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:49,526 INFO L225 Difference]: With dead ends: 486 [2020-09-25 12:20:49,526 INFO L226 Difference]: Without dead ends: 393 [2020-09-25 12:20:49,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:20:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-25 12:20:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 219. [2020-09-25 12:20:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-09-25 12:20:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2020-09-25 12:20:49,543 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 62 [2020-09-25 12:20:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:49,543 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2020-09-25 12:20:49,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:20:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2020-09-25 12:20:49,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 12:20:49,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:49,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:49,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:20:49,547 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1053070700, now seen corresponding path program 1 times [2020-09-25 12:20:49,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:49,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816830690] [2020-09-25 12:20:49,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:51,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 12:20:51,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1933 [2020-09-25 12:20:51,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:51,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:20:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:20:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:51,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:20:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:51,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:51,860 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 12:20:51,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816830690] [2020-09-25 12:20:51,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:51,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 12:20:51,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961368558] [2020-09-25 12:20:51,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:20:51,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:51,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:20:51,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:51,862 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 14 states. [2020-09-25 12:20:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:52,597 INFO L93 Difference]: Finished difference Result 386 states and 417 transitions. [2020-09-25 12:20:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:20:52,598 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-09-25 12:20:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:52,600 INFO L225 Difference]: With dead ends: 386 [2020-09-25 12:20:52,600 INFO L226 Difference]: Without dead ends: 200 [2020-09-25 12:20:52,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:20:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-25 12:20:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 190. [2020-09-25 12:20:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-25 12:20:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2020-09-25 12:20:52,611 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 63 [2020-09-25 12:20:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:52,613 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2020-09-25 12:20:52,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:20:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2020-09-25 12:20:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 12:20:52,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:52,614 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, 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 12:20:52,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:20:52,615 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:52,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 12:20:52,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:52,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021742726] [2020-09-25 12:20:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:20:52,649 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:20:52,649 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:20:52,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:20:52,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:20:52 BoogieIcfgContainer [2020-09-25 12:20:52,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:20:52,697 INFO L168 Benchmark]: Toolchain (without parser) took 32234.92 ms. Allocated memory was 138.9 MB in the beginning and 456.7 MB in the end (delta: 317.7 MB). Free memory was 101.1 MB in the beginning and 336.7 MB in the end (delta: -235.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:20:52,698 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:20:52,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.93 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 170.4 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:20:52,699 INFO L168 Benchmark]: Boogie Preprocessor took 83.77 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 166.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:20:52,700 INFO L168 Benchmark]: RCFGBuilder took 749.30 ms. Allocated memory is still 203.4 MB. Free memory was 166.9 MB in the beginning and 106.0 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-09-25 12:20:52,701 INFO L168 Benchmark]: TraceAbstraction took 30690.34 ms. Allocated memory was 203.4 MB in the beginning and 456.7 MB in the end (delta: 253.2 MB). Free memory was 106.0 MB in the beginning and 336.7 MB in the end (delta: -230.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:20:52,705 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.93 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 170.4 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.77 ms. Allocated memory is still 203.4 MB. Free memory was 170.4 MB in the beginning and 166.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 749.30 ms. Allocated memory is still 203.4 MB. Free memory was 166.9 MB in the beginning and 106.0 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30690.34 ms. Allocated memory was 203.4 MB in the beginning and 456.7 MB in the end (delta: 253.2 MB). Free memory was 106.0 MB in the beginning and 336.7 MB in the end (delta: -230.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.5s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1049 SDtfs, 4195 SDslu, 5449 SDs, 0 SdLazy, 3396 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 615 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 416 ConstructedInterpolants, 0 QuantifiedInterpolants, 236461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...