/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:20:49,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:20:49,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:20:49,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:20:49,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:20:49,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:20:49,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:20:49,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:20:49,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:20:49,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:20:49,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:20:49,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:20:49,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:20:49,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:20:49,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:20:49,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:20:49,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:20:49,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:20:49,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:20:49,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:20:49,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:20:49,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:20:49,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:20:49,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:20:49,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:20:49,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:20:49,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:20:49,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:20:49,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:20:49,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:20:49,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:20:49,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:20:49,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:20:49,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:20:49,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:20:49,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:20:49,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:20:49,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:20:49,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:20:49,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:20:49,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:20:49,845 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 [2020-10-14 23:20:49,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:20:49,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:20:49,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:20:49,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:20:49,884 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:20:49,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:20:49,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:20:49,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:20:49,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:20:49,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:20:49,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:20:49,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:20:49,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:20:49,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:20:49,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:20:49,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:20:49,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:20:49,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:20:49,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:20:49,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:20:49,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:20:49,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:49,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:20:49,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:20:49,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:20:49,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:20:49,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:20:49,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:20:49,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:20:49,891 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:20:50,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:20:50,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:20:50,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:20:50,225 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:20:50,226 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:20:50,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-1.i [2020-10-14 23:20:50,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0051fb708/068ae393f3e640d485cb624c5381152f/FLAGe51a25c3e [2020-10-14 23:20:50,870 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:20:50,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-1.i [2020-10-14 23:20:50,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0051fb708/068ae393f3e640d485cb624c5381152f/FLAGe51a25c3e [2020-10-14 23:20:51,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0051fb708/068ae393f3e640d485cb624c5381152f [2020-10-14 23:20:51,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:20:51,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:20:51,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:51,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:20:51,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:20:51,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:51" (1/1) ... [2020-10-14 23:20:51,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a087e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:51, skipping insertion in model container [2020-10-14 23:20:51,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:51" (1/1) ... [2020-10-14 23:20:51,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:20:51,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:20:51,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:51,888 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:20:51,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:52,011 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:20:52,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52 WrapperNode [2020-10-14 23:20:52,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:52,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:20:52,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:20:52,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:20:52,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (1/1) ... [2020-10-14 23:20:52,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (1/1) ... [2020-10-14 23:20:52,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (1/1) ... [2020-10-14 23:20:52,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (1/1) ... [2020-10-14 23:20:52,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (1/1) ... [2020-10-14 23:20:52,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (1/1) ... [2020-10-14 23:20:52,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (1/1) ... [2020-10-14 23:20:52,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:20:52,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:20:52,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:20:52,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:20:52,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (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 [2020-10-14 23:20:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:20:52,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:20:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:20:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:20:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:20:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:20:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:20:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:20:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:20:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:20:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:20:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:20:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:20:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:20:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:20:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:20:52,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:20:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:20:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:20:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:20:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:20:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:20:52,164 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:20:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:20:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:20:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:20:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:20:52,165 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:20:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:20:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:20:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:20:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:20:52,166 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:20:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:20:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:20:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:20:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:20:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:20:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:20:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:20:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:20:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:20:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:20:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:20:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:20:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:20:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:20:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:20:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:20:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:20:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:20:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:20:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:20:52,169 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:20:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:20:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:20:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:20:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:20:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:20:52,170 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:20:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:20:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:20:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:20:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:20:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:20:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:20:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:20:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:20:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:20:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:20:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:20:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:20:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:20:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:20:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:20:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:20:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:20:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:20:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:20:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:20:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:20:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:20:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:20:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:20:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:20:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:20:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:20:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:20:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:20:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:20:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:20:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:20:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:20:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:20:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:20:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:20:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:20:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:20:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:20:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:20:52,176 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:20:52,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:20:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:20:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:20:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:20:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:20:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:20:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:20:52,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:20:52,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:20:52,705 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:20:52,705 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-14 23:20:52,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:52 BoogieIcfgContainer [2020-10-14 23:20:52,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:20:52,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:20:52,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:20:52,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:20:52,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:51" (1/3) ... [2020-10-14 23:20:52,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562ddc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:52, skipping insertion in model container [2020-10-14 23:20:52,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:52" (2/3) ... [2020-10-14 23:20:52,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562ddc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:52, skipping insertion in model container [2020-10-14 23:20:52,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:52" (3/3) ... [2020-10-14 23:20:52,719 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2020-10-14 23:20:52,730 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:20:52,737 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-14 23:20:52,752 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-14 23:20:52,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:20:52,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:20:52,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:20:52,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:20:52,776 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:20:52,776 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:20:52,776 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:20:52,776 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:20:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 23:20:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:20:52,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:52,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:52,803 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2020-10-14 23:20:52,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:52,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309734117] [2020-10-14 23:20:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:20:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 23:20:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:53,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:20:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:20:53,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:53,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:53,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:53,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:53,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:53,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:53,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309734117] [2020-10-14 23:20:53,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:53,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:53,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626574900] [2020-10-14 23:20:53,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:53,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:53,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:53,475 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-14 23:20:53,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:53,662 INFO L93 Difference]: Finished difference Result 83 states and 130 transitions. [2020-10-14 23:20:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:53,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:20:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:53,674 INFO L225 Difference]: With dead ends: 83 [2020-10-14 23:20:53,675 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:20:53,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:20:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-14 23:20:53,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:20:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-14 23:20:53,722 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 10 [2020-10-14 23:20:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:53,723 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-14 23:20:53,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-14 23:20:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:20:53,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:53,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:53,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:20:53,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:53,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:53,725 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2020-10-14 23:20:53,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:53,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307162642] [2020-10-14 23:20:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:53,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:53,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:20:53,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:20:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:53,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:20:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:54,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:54,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:20:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:54,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:54,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307162642] [2020-10-14 23:20:54,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:54,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:54,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869619742] [2020-10-14 23:20:54,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:54,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:54,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:54,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:54,064 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-14 23:20:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:54,228 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-14 23:20:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:20:54,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 23:20:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:54,230 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:20:54,231 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:20:54,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:20:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-14 23:20:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 23:20:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-14 23:20:54,241 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 14 [2020-10-14 23:20:54,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:54,242 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-14 23:20:54,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-10-14 23:20:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:20:54,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:54,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:54,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:20:54,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2020-10-14 23:20:54,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:54,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294588567] [2020-10-14 23:20:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:54,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:20:54,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:54,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 23:20:54,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:54,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:20:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:54,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:54,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:54,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:54,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:54,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:54,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:54,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:54,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294588567] [2020-10-14 23:20:54,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:54,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:54,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713521246] [2020-10-14 23:20:54,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:54,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:54,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:54,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:54,487 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 6 states. [2020-10-14 23:20:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:54,696 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-14 23:20:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:20:54,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 23:20:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:54,697 INFO L225 Difference]: With dead ends: 61 [2020-10-14 23:20:54,698 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:20:54,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:20:54,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-14 23:20:54,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 23:20:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2020-10-14 23:20:54,708 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 17 [2020-10-14 23:20:54,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:54,709 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2020-10-14 23:20:54,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:54,709 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-10-14 23:20:54,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:20:54,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:54,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:54,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:20:54,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:54,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:54,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2075946271, now seen corresponding path program 1 times [2020-10-14 23:20:54,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:54,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607769839] [2020-10-14 23:20:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:20:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 23:20:54,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:54,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:54,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:54,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:54,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:54,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:54,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:54,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:54,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:54,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:54,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:54,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607769839] [2020-10-14 23:20:54,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:54,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:54,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551886600] [2020-10-14 23:20:54,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:54,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:54,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:54,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:54,956 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand 6 states. [2020-10-14 23:20:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:55,159 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-14 23:20:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:55,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 23:20:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:55,161 INFO L225 Difference]: With dead ends: 53 [2020-10-14 23:20:55,161 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 23:20:55,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 23:20:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 23:20:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:20:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-14 23:20:55,174 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 17 [2020-10-14 23:20:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:55,175 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-14 23:20:55,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-14 23:20:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:20:55,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:55,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:55,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:20:55,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:55,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1087811858, now seen corresponding path program 1 times [2020-10-14 23:20:55,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:55,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457844187] [2020-10-14 23:20:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:20:55,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 23:20:55,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:55,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:20:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:20:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:55,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:55,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:55,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:55,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457844187] [2020-10-14 23:20:55,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:55,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:20:55,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764155296] [2020-10-14 23:20:55,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:20:55,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:55,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:20:55,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:20:55,546 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 7 states. [2020-10-14 23:20:55,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:55,663 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-14 23:20:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:20:55,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 23:20:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:55,665 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:20:55,665 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:20:55,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:55,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:20:55,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 29. [2020-10-14 23:20:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:20:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-14 23:20:55,671 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 20 [2020-10-14 23:20:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:55,671 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-14 23:20:55,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:20:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-14 23:20:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:20:55,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:55,672 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] [2020-10-14 23:20:55,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:20:55,672 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1068600021, now seen corresponding path program 1 times [2020-10-14 23:20:55,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:55,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518100753] [2020-10-14 23:20:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:55,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:20:55,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 23:20:55,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:55,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:20:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:20:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:55,908 ERROR L253 erpolLogProxyWrapper]: Interpolant 14 not inductive [2020-10-14 23:20:55,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:20:55,910 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 23:20:55,919 INFO L168 Benchmark]: Toolchain (without parser) took 4602.93 ms. Allocated memory was 146.3 MB in the beginning and 246.9 MB in the end (delta: 100.7 MB). Free memory was 101.0 MB in the beginning and 134.5 MB in the end (delta: -33.4 MB). Peak memory consumption was 67.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:55,924 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:20:55,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.39 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 168.7 MB in the end (delta: -68.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:55,931 INFO L168 Benchmark]: Boogie Preprocessor took 73.71 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 165.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:55,932 INFO L168 Benchmark]: RCFGBuilder took 622.63 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 121.5 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:55,937 INFO L168 Benchmark]: TraceAbstraction took 3206.25 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 121.5 MB in the beginning and 134.5 MB in the end (delta: -12.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:55,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.39 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 168.7 MB in the end (delta: -68.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.71 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 165.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 622.63 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 121.5 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3206.25 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 121.5 MB in the beginning and 134.5 MB in the end (delta: -12.9 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...