/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=LOWLEXORDER --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-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:37:57,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:37:57,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:37:57,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:37:57,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:37:57,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:37:57,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:37:57,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:37:57,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:37:57,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:37:57,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:37:57,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:37:57,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:37:57,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:37:57,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:37:57,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:37:57,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:37:57,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:37:57,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:37:57,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:37:57,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:37:57,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:37:57,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:37:57,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:37:57,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:37:57,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:37:57,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:37:57,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:37:57,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:37:57,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:37:57,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:37:57,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:37:57,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:37:57,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:37:57,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:37:57,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:37:57,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:37:57,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:37:57,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:37:57,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:37:57,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:37:57,343 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 [2020-09-24 21:37:57,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:37:57,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:37:57,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:37:57,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:37:57,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:37:57,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:37:57,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:37:57,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:37:57,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:37:57,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:37:57,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:37:57,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:37:57,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:37:57,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:37:57,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:37:57,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:37:57,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:37:57,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:37:57,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:37:57,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:37:57,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:37:57,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:37:57,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:37:57,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:37:57,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:37:57,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:37:57,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:37:57,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:37:57,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:37:57,377 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:37:57,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:37:57,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:37:57,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:37:57,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:37:57,892 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:37:57,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 21:37:57,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04c32687d/ffa40762547e446e93b2e6abc73df37c/FLAGf745da91a [2020-09-24 21:37:58,616 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:37:58,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-24 21:37:58,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04c32687d/ffa40762547e446e93b2e6abc73df37c/FLAGf745da91a [2020-09-24 21:37:58,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04c32687d/ffa40762547e446e93b2e6abc73df37c [2020-09-24 21:37:58,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:37:58,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:37:58,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:37:58,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:37:58,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:37:58,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:37:58" (1/1) ... [2020-09-24 21:37:58,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:58, skipping insertion in model container [2020-09-24 21:37:58,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:37:58" (1/1) ... [2020-09-24 21:37:58,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:37:58,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:37:59,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:37:59,480 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:37:59,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:37:59,616 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:37:59,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59 WrapperNode [2020-09-24 21:37:59,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:37:59,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:37:59,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:37:59,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:37:59,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (1/1) ... [2020-09-24 21:37:59,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (1/1) ... [2020-09-24 21:37:59,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (1/1) ... [2020-09-24 21:37:59,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (1/1) ... [2020-09-24 21:37:59,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (1/1) ... [2020-09-24 21:37:59,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (1/1) ... [2020-09-24 21:37:59,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (1/1) ... [2020-09-24 21:37:59,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:37:59,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:37:59,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:37:59,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:37:59,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (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 [2020-09-24 21:37:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:37:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:37:59,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:37:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 21:37:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 21:37:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 21:37:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 21:37:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 21:37:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 21:37:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 21:37:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 21:37:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 21:37:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 21:37:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 21:37:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 21:37:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 21:37:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 21:37:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 21:37:59,786 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 21:37:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 21:37:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 21:37:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 21:37:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 21:37:59,787 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 21:37:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 21:37:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 21:37:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 21:37:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 21:37:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 21:37:59,788 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 21:37:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 21:37:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 21:37:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 21:37:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 21:37:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 21:37:59,789 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 21:37:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 21:37:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 21:37:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 21:37:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 21:37:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 21:37:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 21:37:59,790 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 21:37:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 21:37:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 21:37:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 21:37:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 21:37:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 21:37:59,791 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 21:37:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 21:37:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 21:37:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 21:37:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 21:37:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:37:59,792 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 21:37:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 21:37:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:37:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 21:37:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 21:37:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 21:37:59,793 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 21:37:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 21:37:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:37:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 21:37:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 21:37:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 21:37:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:37:59,794 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 21:37:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 21:37:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 21:37:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 21:37:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 21:37:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 21:37:59,795 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 21:37:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 21:37:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 21:37:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 21:37:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 21:37:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 21:37:59,796 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 21:37:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 21:37:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 21:37:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 21:37:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 21:37:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 21:37:59,797 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 21:37:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 21:37:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 21:37:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 21:37:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 21:37:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 21:37:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 21:37:59,798 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 21:37:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 21:37:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 21:37:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 21:37:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 21:37:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 21:37:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 21:37:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 21:37:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 21:37:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 21:37:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 21:37:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 21:37:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 21:37:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 21:37:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:37:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:37:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:37:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:37:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:37:59,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:37:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:37:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:37:59,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:00,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:00,571 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 21:38:00,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:00 BoogieIcfgContainer [2020-09-24 21:38:00,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:00,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:00,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:00,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:00,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:37:58" (1/3) ... [2020-09-24 21:38:00,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:00, skipping insertion in model container [2020-09-24 21:38:00,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:59" (2/3) ... [2020-09-24 21:38:00,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:00, skipping insertion in model container [2020-09-24 21:38:00,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:00" (3/3) ... [2020-09-24 21:38:00,600 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-24 21:38:00,616 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:00,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 21:38:00,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 21:38:00,696 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:00,696 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:00,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:00,697 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:00,697 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:00,697 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:00,698 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:00,698 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 21:38:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-24 21:38:00,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:00,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:00,759 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:00,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-24 21:38:00,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:00,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103962977] [2020-09-24 21:38:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:01,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:01,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:38:01,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-24 21:38:01,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:38:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 21:38:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:38:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:01,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:01,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:01,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:38:01,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:01,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103962977] [2020-09-24 21:38:01,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:01,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:38:01,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920119791] [2020-09-24 21:38:01,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:38:01,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:01,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:38:01,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:38:01,351 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 21:38:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:01,792 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-24 21:38:01,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:38:01,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-24 21:38:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:01,811 INFO L225 Difference]: With dead ends: 359 [2020-09-24 21:38:01,811 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 21:38:01,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 21:38:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 21:38:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 21:38:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-24 21:38:01,885 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-24 21:38:01,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:01,886 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-24 21:38:01,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:38:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-24 21:38:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 21:38:01,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:01,888 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] [2020-09-24 21:38:01,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:38:01,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:01,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:01,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-24 21:38:01,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:01,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856340061] [2020-09-24 21:38:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:01,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:02,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:02,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:38:02,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:02,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-24 21:38:02,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:02,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:38:02,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:38:02,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:02,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:02,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:02,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:02,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:02,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:38:02,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:02,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:02,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856340061] [2020-09-24 21:38:02,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:02,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:02,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516921325] [2020-09-24 21:38:02,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:02,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:02,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:02,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:02,298 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 6 states. [2020-09-24 21:38:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:02,805 INFO L93 Difference]: Finished difference Result 392 states and 414 transitions. [2020-09-24 21:38:02,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:38:02,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-09-24 21:38:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:02,809 INFO L225 Difference]: With dead ends: 392 [2020-09-24 21:38:02,809 INFO L226 Difference]: Without dead ends: 259 [2020-09-24 21:38:02,816 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 [2020-09-24 21:38:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-24 21:38:02,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 167. [2020-09-24 21:38:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 21:38:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2020-09-24 21:38:02,854 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 25 [2020-09-24 21:38:02,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:02,855 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2020-09-24 21:38:02,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2020-09-24 21:38:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 21:38:02,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:02,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:02,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:38:02,857 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:02,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:02,858 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-24 21:38:02,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:02,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281452576] [2020-09-24 21:38:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:02,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:03,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:03,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:38:03,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-24 21:38:03,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:38:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:38:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:03,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:03,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:03,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281452576] [2020-09-24 21:38:03,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:03,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:03,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479592399] [2020-09-24 21:38:03,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:03,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:03,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:03,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:03,317 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand 6 states. [2020-09-24 21:38:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:03,725 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2020-09-24 21:38:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:38:03,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-24 21:38:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:03,728 INFO L225 Difference]: With dead ends: 260 [2020-09-24 21:38:03,728 INFO L226 Difference]: Without dead ends: 255 [2020-09-24 21:38:03,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:38:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-24 21:38:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 170. [2020-09-24 21:38:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-24 21:38:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 179 transitions. [2020-09-24 21:38:03,742 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 179 transitions. Word has length 27 [2020-09-24 21:38:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:03,743 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 179 transitions. [2020-09-24 21:38:03,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 179 transitions. [2020-09-24 21:38:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 21:38:03,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:03,744 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] [2020-09-24 21:38:03,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:38:03,745 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1216115010, now seen corresponding path program 1 times [2020-09-24 21:38:03,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:03,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702500591] [2020-09-24 21:38:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:05,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:05,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:38:05,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-09-24 21:38:05,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:38:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:38:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:05,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:05,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:05,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:05,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:38:05,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:05,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702500591] [2020-09-24 21:38:05,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:05,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 21:38:05,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812869274] [2020-09-24 21:38:05,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:38:05,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:05,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:38:05,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:38:05,470 INFO L87 Difference]: Start difference. First operand 170 states and 179 transitions. Second operand 12 states. [2020-09-24 21:38:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:06,621 INFO L93 Difference]: Finished difference Result 540 states and 569 transitions. [2020-09-24 21:38:06,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:38:06,622 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-09-24 21:38:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:06,625 INFO L225 Difference]: With dead ends: 540 [2020-09-24 21:38:06,626 INFO L226 Difference]: Without dead ends: 405 [2020-09-24 21:38:06,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:38:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-09-24 21:38:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 162. [2020-09-24 21:38:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 21:38:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 170 transitions. [2020-09-24 21:38:06,658 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 170 transitions. Word has length 34 [2020-09-24 21:38:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:06,658 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 170 transitions. [2020-09-24 21:38:06,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:38:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 170 transitions. [2020-09-24 21:38:06,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:38:06,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:06,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:06,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:38:06,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:06,663 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-09-24 21:38:06,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:06,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156901059] [2020-09-24 21:38:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:06,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:06,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 21:38:06,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:06,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 21:38:06,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:06,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 21:38:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:06,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:07,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:07,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:07,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:38:07,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:07,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:07,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156901059] [2020-09-24 21:38:07,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:07,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:07,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130632285] [2020-09-24 21:38:07,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:07,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:07,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:07,019 INFO L87 Difference]: Start difference. First operand 162 states and 170 transitions. Second operand 6 states. [2020-09-24 21:38:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:07,465 INFO L93 Difference]: Finished difference Result 270 states and 284 transitions. [2020-09-24 21:38:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:38:07,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 21:38:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:07,470 INFO L225 Difference]: With dead ends: 270 [2020-09-24 21:38:07,470 INFO L226 Difference]: Without dead ends: 238 [2020-09-24 21:38:07,471 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 [2020-09-24 21:38:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-24 21:38:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-09-24 21:38:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 21:38:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2020-09-24 21:38:07,488 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 35 [2020-09-24 21:38:07,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:07,489 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2020-09-24 21:38:07,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2020-09-24 21:38:07,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 21:38:07,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:07,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:07,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:38:07,499 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:07,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-09-24 21:38:07,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:07,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871109044] [2020-09-24 21:38:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:07,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:09,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:09,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 21:38:09,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:38:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-09-24 21:38:09,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:38:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 21:38:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:09,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:09,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871109044] [2020-09-24 21:38:09,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:09,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:38:09,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582112522] [2020-09-24 21:38:09,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:38:09,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:09,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:38:09,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:38:09,152 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand 10 states. [2020-09-24 21:38:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:09,661 INFO L93 Difference]: Finished difference Result 232 states and 244 transitions. [2020-09-24 21:38:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:38:09,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-09-24 21:38:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:09,663 INFO L225 Difference]: With dead ends: 232 [2020-09-24 21:38:09,663 INFO L226 Difference]: Without dead ends: 228 [2020-09-24 21:38:09,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:38:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-09-24 21:38:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 157. [2020-09-24 21:38:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 21:38:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 165 transitions. [2020-09-24 21:38:09,671 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 165 transitions. Word has length 42 [2020-09-24 21:38:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:09,672 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 165 transitions. [2020-09-24 21:38:09,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:38:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 165 transitions. [2020-09-24 21:38:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:38:09,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:09,674 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] [2020-09-24 21:38:09,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:38:09,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-09-24 21:38:09,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:09,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074523934] [2020-09-24 21:38:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:09,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:09,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 21:38:09,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 21:38:09,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:38:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 21:38:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:38:09,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:09,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:09,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074523934] [2020-09-24 21:38:09,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:09,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:38:09,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927200132] [2020-09-24 21:38:09,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:38:09,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:09,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:38:09,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:38:09,803 INFO L87 Difference]: Start difference. First operand 157 states and 165 transitions. Second operand 4 states. [2020-09-24 21:38:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:10,033 INFO L93 Difference]: Finished difference Result 199 states and 211 transitions. [2020-09-24 21:38:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 21:38:10,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 21:38:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:10,035 INFO L225 Difference]: With dead ends: 199 [2020-09-24 21:38:10,036 INFO L226 Difference]: Without dead ends: 197 [2020-09-24 21:38:10,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:38:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-24 21:38:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-24 21:38:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 21:38:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2020-09-24 21:38:10,043 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 43 [2020-09-24 21:38:10,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:10,044 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2020-09-24 21:38:10,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:38:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2020-09-24 21:38:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 21:38:10,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:10,045 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] [2020-09-24 21:38:10,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:38:10,045 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:10,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:10,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-09-24 21:38:10,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:10,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596942732] [2020-09-24 21:38:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:10,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:10,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 21:38:10,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-09-24 21:38:10,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:38:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:38:10,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 21:38:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:11,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:11,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:11,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:11,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:11,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:11,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:11,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:11,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596942732] [2020-09-24 21:38:11,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:11,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:38:11,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55293755] [2020-09-24 21:38:11,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:38:11,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:38:11,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:38:11,027 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 7 states. [2020-09-24 21:38:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:11,544 INFO L93 Difference]: Finished difference Result 350 states and 373 transitions. [2020-09-24 21:38:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:38:11,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-09-24 21:38:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:11,546 INFO L225 Difference]: With dead ends: 350 [2020-09-24 21:38:11,546 INFO L226 Difference]: Without dead ends: 281 [2020-09-24 21:38:11,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:38:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-09-24 21:38:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 178. [2020-09-24 21:38:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-24 21:38:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 188 transitions. [2020-09-24 21:38:11,556 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 188 transitions. Word has length 45 [2020-09-24 21:38:11,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:11,557 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 188 transitions. [2020-09-24 21:38:11,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:38:11,557 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 188 transitions. [2020-09-24 21:38:11,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 21:38:11,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:11,558 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] [2020-09-24 21:38:11,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:38:11,559 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:11,559 INFO L82 PathProgramCache]: Analyzing trace with hash 797256871, now seen corresponding path program 1 times [2020-09-24 21:38:11,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:11,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508872465] [2020-09-24 21:38:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:11,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:11,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:13,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:13,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 21:38:13,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2020 [2020-09-24 21:38:13,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:38:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:13,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:38:13,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:13,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:13,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:13,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:13,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:13,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:13,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508872465] [2020-09-24 21:38:13,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:13,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 21:38:13,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348001699] [2020-09-24 21:38:13,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:38:13,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:13,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:38:13,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:38:13,837 INFO L87 Difference]: Start difference. First operand 178 states and 188 transitions. Second operand 13 states. [2020-09-24 21:38:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:15,112 INFO L93 Difference]: Finished difference Result 541 states and 576 transitions. [2020-09-24 21:38:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:38:15,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-09-24 21:38:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:15,116 INFO L225 Difference]: With dead ends: 541 [2020-09-24 21:38:15,116 INFO L226 Difference]: Without dead ends: 472 [2020-09-24 21:38:15,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:38:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-09-24 21:38:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 195. [2020-09-24 21:38:15,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 21:38:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2020-09-24 21:38:15,127 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 50 [2020-09-24 21:38:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:15,128 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2020-09-24 21:38:15,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:38:15,128 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2020-09-24 21:38:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 21:38:15,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:15,129 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] [2020-09-24 21:38:15,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:38:15,129 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:15,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-24 21:38:15,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:15,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054901263] [2020-09-24 21:38:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:15,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:18,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:18,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 21:38:18,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:38:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3237 [2020-09-24 21:38:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:38:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 21:38:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:18,803 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-09-24 21:38:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:19,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054901263] [2020-09-24 21:38:19,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:19,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 21:38:19,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99613763] [2020-09-24 21:38:19,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:38:19,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:19,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:38:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:38:19,033 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 14 states. [2020-09-24 21:38:19,527 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-09-24 21:38:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:21,491 INFO L93 Difference]: Finished difference Result 546 states and 579 transitions. [2020-09-24 21:38:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:38:21,492 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-24 21:38:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:21,498 INFO L225 Difference]: With dead ends: 546 [2020-09-24 21:38:21,498 INFO L226 Difference]: Without dead ends: 543 [2020-09-24 21:38:21,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:38:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-09-24 21:38:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 198. [2020-09-24 21:38:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-24 21:38:21,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 210 transitions. [2020-09-24 21:38:21,512 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 210 transitions. Word has length 54 [2020-09-24 21:38:21,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:21,513 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 210 transitions. [2020-09-24 21:38:21,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:38:21,513 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 210 transitions. [2020-09-24 21:38:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 21:38:21,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:21,514 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] [2020-09-24 21:38:21,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:38:21,514 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:21,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-09-24 21:38:21,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:21,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851364563] [2020-09-24 21:38:21,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:21,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 21:38:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:38:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2361 [2020-09-24 21:38:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:38:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 21:38:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:23,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:23,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:23,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:23,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:23,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:38:24,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851364563] [2020-09-24 21:38:24,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:24,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:24,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495708082] [2020-09-24 21:38:24,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:24,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:24,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:24,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:24,019 INFO L87 Difference]: Start difference. First operand 198 states and 210 transitions. Second operand 6 states. [2020-09-24 21:38:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:24,409 INFO L93 Difference]: Finished difference Result 283 states and 301 transitions. [2020-09-24 21:38:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:38:24,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-24 21:38:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:24,411 INFO L225 Difference]: With dead ends: 283 [2020-09-24 21:38:24,411 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 21:38:24,412 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 [2020-09-24 21:38:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 21:38:24,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 232. [2020-09-24 21:38:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-24 21:38:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2020-09-24 21:38:24,430 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 54 [2020-09-24 21:38:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:24,431 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2020-09-24 21:38:24,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2020-09-24 21:38:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 21:38:24,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:24,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-09-24 21:38:24,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:38:24,433 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:24,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1943233352, now seen corresponding path program 1 times [2020-09-24 21:38:24,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:24,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18498701] [2020-09-24 21:38:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:24,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:24,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:38:24,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-09-24 21:38:24,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:38:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:38:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 21:38:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:25,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:25,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:25,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:38:25,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:25,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18498701] [2020-09-24 21:38:25,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:25,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:38:25,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317319299] [2020-09-24 21:38:25,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:38:25,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:25,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:38:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:38:25,097 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand 7 states. [2020-09-24 21:38:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:25,731 INFO L93 Difference]: Finished difference Result 381 states and 411 transitions. [2020-09-24 21:38:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:38:25,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-24 21:38:25,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:25,734 INFO L225 Difference]: With dead ends: 381 [2020-09-24 21:38:25,734 INFO L226 Difference]: Without dead ends: 278 [2020-09-24 21:38:25,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:38:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-09-24 21:38:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 232. [2020-09-24 21:38:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-24 21:38:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 250 transitions. [2020-09-24 21:38:25,779 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 250 transitions. Word has length 56 [2020-09-24 21:38:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:25,779 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 250 transitions. [2020-09-24 21:38:25,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:38:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 250 transitions. [2020-09-24 21:38:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 21:38:25,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:25,782 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] [2020-09-24 21:38:25,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 21:38:25,782 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:25,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-09-24 21:38:25,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:25,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399933981] [2020-09-24 21:38:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:26,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:26,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:38:26,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-24 21:38:26,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 21:38:26,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 21:38:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:26,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:26,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:26,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:26,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:26,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:26,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:26,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:26,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399933981] [2020-09-24 21:38:26,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:26,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:26,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392715838] [2020-09-24 21:38:26,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:26,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:26,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:26,137 INFO L87 Difference]: Start difference. First operand 232 states and 250 transitions. Second operand 6 states. [2020-09-24 21:38:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:26,468 INFO L93 Difference]: Finished difference Result 375 states and 403 transitions. [2020-09-24 21:38:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:38:26,471 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 21:38:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:26,473 INFO L225 Difference]: With dead ends: 375 [2020-09-24 21:38:26,474 INFO L226 Difference]: Without dead ends: 256 [2020-09-24 21:38:26,474 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 [2020-09-24 21:38:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-24 21:38:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 235. [2020-09-24 21:38:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-24 21:38:26,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2020-09-24 21:38:26,486 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 56 [2020-09-24 21:38:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:26,486 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2020-09-24 21:38:26,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2020-09-24 21:38:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 21:38:26,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:26,487 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] [2020-09-24 21:38:26,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 21:38:26,488 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:26,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:26,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-24 21:38:26,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:26,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995006020] [2020-09-24 21:38:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:38:26,508 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:38:26,508 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:38:26,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 21:38:26,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:38:26 BoogieIcfgContainer [2020-09-24 21:38:26,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:38:26,539 INFO L168 Benchmark]: Toolchain (without parser) took 27689.06 ms. Allocated memory was 137.9 MB in the beginning and 447.7 MB in the end (delta: 309.9 MB). Free memory was 99.8 MB in the beginning and 303.1 MB in the end (delta: -203.3 MB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:26,540 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:38:26,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.06 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 168.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:26,541 INFO L168 Benchmark]: Boogie Preprocessor took 85.29 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 165.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:26,542 INFO L168 Benchmark]: RCFGBuilder took 879.96 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 102.3 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:26,543 INFO L168 Benchmark]: TraceAbstraction took 25949.76 ms. Allocated memory was 202.4 MB in the beginning and 447.7 MB in the end (delta: 245.4 MB). Free memory was 101.6 MB in the beginning and 303.1 MB in the end (delta: -201.5 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:38:26,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 762.06 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 168.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.29 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 165.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 879.96 ms. Allocated memory is still 202.4 MB. Free memory was 164.8 MB in the beginning and 102.3 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25949.76 ms. Allocated memory was 202.4 MB in the beginning and 447.7 MB in the end (delta: 245.4 MB). Free memory was 101.6 MB in the beginning and 303.1 MB in the end (delta: -201.5 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.8s, OverallIterations: 14, TraceHistogramMax: 2, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2246 SDtfs, 4610 SDslu, 8431 SDs, 0 SdLazy, 5277 SolverSat, 171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 1449 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 592 NumberOfCodeBlocks, 592 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 521 ConstructedInterpolants, 0 QuantifiedInterpolants, 220351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 6/7 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...