/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=BIGGEST --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/eca-rers2012/Problem12_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:26:29,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:26:29,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:26:29,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:26:29,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:26:29,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:26:29,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:26:29,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:26:29,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:26:29,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:26:29,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:26:29,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:26:29,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:26:29,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:26:29,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:26:29,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:26:29,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:26:29,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:26:29,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:26:29,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:26:29,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:26:29,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:26:29,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:26:29,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:26:29,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:26:29,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:26:29,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:26:29,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:26:29,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:26:29,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:26:29,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:26:29,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:26:29,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:26:29,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:26:29,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:26:29,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:26:29,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:26:29,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:26:29,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:26:29,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:26:29,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:26:29,891 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 [2020-10-12 13:26:29,914 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:26:29,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:26:29,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:26:29,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:26:29,916 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:26:29,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:26:29,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:26:29,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:26:29,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:26:29,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:26:29,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:26:29,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:26:29,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:26:29,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:26:29,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:26:29,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:26:29,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:26:29,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:26:29,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:26:29,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:26:29,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:26:29,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:26:29,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:26:29,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:26:29,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:26:29,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:26:29,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:26:29,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:26:29,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:26:29,921 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:26:30,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:26:30,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:26:30,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:26:30,272 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:26:30,273 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:26:30,273 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2020-10-12 13:26:30,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed91e1b20/ad7a2461de0f49a9b655f0cdca988afb/FLAGc455c20da [2020-10-12 13:26:31,112 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:26:31,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label38.c [2020-10-12 13:26:31,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed91e1b20/ad7a2461de0f49a9b655f0cdca988afb/FLAGc455c20da [2020-10-12 13:26:31,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed91e1b20/ad7a2461de0f49a9b655f0cdca988afb [2020-10-12 13:26:31,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:26:31,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:26:31,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:26:31,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:26:31,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:26:31,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:26:31" (1/1) ... [2020-10-12 13:26:31,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:31, skipping insertion in model container [2020-10-12 13:26:31,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:26:31" (1/1) ... [2020-10-12 13:26:31,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:26:31,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:26:32,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:26:32,949 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:26:33,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:26:33,613 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:26:33,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33 WrapperNode [2020-10-12 13:26:33,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:26:33,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:26:33,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:26:33,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:26:33,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... [2020-10-12 13:26:33,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... [2020-10-12 13:26:33,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... [2020-10-12 13:26:33,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... [2020-10-12 13:26:33,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... [2020-10-12 13:26:33,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... [2020-10-12 13:26:33,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... [2020-10-12 13:26:33,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:26:33,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:26:33,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:26:33,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:26:33,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:26:34,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:26:34,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:26:34,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:26:34,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:26:34,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:26:34,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:26:34,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:26:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:26:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:26:34,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:26:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:26:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:26:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:26:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:26:34,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:26:34,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:26:34,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:26:38,881 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:26:38,882 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:26:38,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:26:38 BoogieIcfgContainer [2020-10-12 13:26:38,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:26:38,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:26:38,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:26:38,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:26:38,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:26:31" (1/3) ... [2020-10-12 13:26:38,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c301d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:26:38, skipping insertion in model container [2020-10-12 13:26:38,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:26:33" (2/3) ... [2020-10-12 13:26:38,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4c301d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:26:38, skipping insertion in model container [2020-10-12 13:26:38,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:26:38" (3/3) ... [2020-10-12 13:26:38,912 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label38.c [2020-10-12 13:26:38,925 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:26:38,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:26:38,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:26:38,987 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:26:38,987 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:26:38,987 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:26:38,988 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:26:38,988 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:26:38,988 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:26:38,988 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:26:38,988 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:26:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:26:39,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 13:26:39,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:26:39,038 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] [2020-10-12 13:26:39,038 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:26:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:26:39,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1431162507, now seen corresponding path program 1 times [2020-10-12 13:26:39,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:26:39,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835590216] [2020-10-12 13:26:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:26:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:39,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:39,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 13:26:39,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-12 13:26:39,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:26:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:26:39,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 13:26:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 13:26:39,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:26:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:26:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:26:39,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:26:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:26:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:26:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:26:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:26:39,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835590216] [2020-10-12 13:26:39,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:26:39,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:26:39,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093099299] [2020-10-12 13:26:39,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:26:39,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:26:39,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:26:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:26:39,904 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:26:48,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:26:48,512 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:26:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:26:48,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-12 13:26:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:26:48,556 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:26:48,557 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:26:48,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:26:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:26:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:26:48,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:26:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-12 13:26:48,720 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 30 [2020-10-12 13:26:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:26:48,721 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-12 13:26:48,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:26:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-12 13:26:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 13:26:48,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:26:48,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:26:48,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:26:48,727 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:26:48,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:26:48,728 INFO L82 PathProgramCache]: Analyzing trace with hash -809031011, now seen corresponding path program 1 times [2020-10-12 13:26:48,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:26:48,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115570006] [2020-10-12 13:26:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:26:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:49,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:49,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 13:26:49,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:26:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-12 13:26:49,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:26:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:26:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 13:26:49,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:26:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:26:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:49,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:49,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:26:49,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:26:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:26:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:26:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:26:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:26:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:26:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:26:49,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:26:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:26:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:26:49,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:26:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:26:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:26:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:26:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 13:26:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:26:49,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115570006] [2020-10-12 13:26:49,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:26:49,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:26:49,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781469569] [2020-10-12 13:26:49,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:26:49,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:26:49,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:26:49,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:26:49,994 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-12 13:26:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:26:59,001 INFO L93 Difference]: Finished difference Result 4690 states and 7651 transitions. [2020-10-12 13:26:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:26:59,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-12 13:26:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:26:59,022 INFO L225 Difference]: With dead ends: 4690 [2020-10-12 13:26:59,022 INFO L226 Difference]: Without dead ends: 3143 [2020-10-12 13:26:59,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:26:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-12 13:26:59,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3125. [2020-10-12 13:26:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-12 13:26:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4443 transitions. [2020-10-12 13:26:59,150 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4443 transitions. Word has length 105 [2020-10-12 13:26:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:26:59,154 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 4443 transitions. [2020-10-12 13:26:59,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:26:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4443 transitions. [2020-10-12 13:26:59,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 13:26:59,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:26:59,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:26:59,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:26:59,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:26:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:26:59,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1235531349, now seen corresponding path program 1 times [2020-10-12 13:26:59,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:26:59,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140870166] [2020-10-12 13:26:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:26:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:26:59,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:26:59,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:00,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:27:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:27:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-12 13:27:00,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:27:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:27:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 13:27:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:00,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:00,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:00,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:27:00,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:27:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:27:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:00,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:00,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:27:00,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:00,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 13:27:00,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:00,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:00,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:27:00,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:27:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:27:00,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140870166] [2020-10-12 13:27:00,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:27:00,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:27:00,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921223143] [2020-10-12 13:27:00,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:27:00,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:00,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:27:00,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:27:00,515 INFO L87 Difference]: Start difference. First operand 3125 states and 4443 transitions. Second operand 7 states. [2020-10-12 13:27:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:27:13,337 INFO L93 Difference]: Finished difference Result 9573 states and 13791 transitions. [2020-10-12 13:27:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:27:13,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-12 13:27:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:27:13,378 INFO L225 Difference]: With dead ends: 9573 [2020-10-12 13:27:13,379 INFO L226 Difference]: Without dead ends: 6454 [2020-10-12 13:27:13,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:27:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2020-10-12 13:27:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 6342. [2020-10-12 13:27:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6342 states. [2020-10-12 13:27:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6342 states to 6342 states and 8492 transitions. [2020-10-12 13:27:13,621 INFO L78 Accepts]: Start accepts. Automaton has 6342 states and 8492 transitions. Word has length 109 [2020-10-12 13:27:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:27:13,624 INFO L479 AbstractCegarLoop]: Abstraction has 6342 states and 8492 transitions. [2020-10-12 13:27:13,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:27:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6342 states and 8492 transitions. [2020-10-12 13:27:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 13:27:13,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:27:13,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:27:13,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:27:13,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:27:13,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:27:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash -587375119, now seen corresponding path program 1 times [2020-10-12 13:27:13,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:27:13,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407416430] [2020-10-12 13:27:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:27:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:15,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-12 13:27:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:27:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1431 [2020-10-12 13:27:15,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:27:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:27:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:27:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:15,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:15,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:15,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:15,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:27:15,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:15,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:27:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:27:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:27:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:15,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:15,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:27:15,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-12 13:27:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:27:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:27:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:27:15,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407416430] [2020-10-12 13:27:15,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:27:15,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:27:15,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691811621] [2020-10-12 13:27:15,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:27:15,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:15,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:27:15,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:27:15,687 INFO L87 Difference]: Start difference. First operand 6342 states and 8492 transitions. Second operand 7 states. [2020-10-12 13:27:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:27:28,898 INFO L93 Difference]: Finished difference Result 18682 states and 25637 transitions. [2020-10-12 13:27:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:27:28,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-12 13:27:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:27:28,969 INFO L225 Difference]: With dead ends: 18682 [2020-10-12 13:27:28,969 INFO L226 Difference]: Without dead ends: 12346 [2020-10-12 13:27:28,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:27:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12346 states. [2020-10-12 13:27:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12346 to 12149. [2020-10-12 13:27:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12149 states. [2020-10-12 13:27:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12149 states to 12149 states and 15124 transitions. [2020-10-12 13:27:29,340 INFO L78 Accepts]: Start accepts. Automaton has 12149 states and 15124 transitions. Word has length 143 [2020-10-12 13:27:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:27:29,342 INFO L479 AbstractCegarLoop]: Abstraction has 12149 states and 15124 transitions. [2020-10-12 13:27:29,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:27:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12149 states and 15124 transitions. [2020-10-12 13:27:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-12 13:27:29,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:27:29,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:27:29,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:27:29,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:27:29,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:27:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1691233168, now seen corresponding path program 1 times [2020-10-12 13:27:29,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:27:29,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070055365] [2020-10-12 13:27:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:27:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:29,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:31,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:31,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 13:27:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:27:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1811 [2020-10-12 13:27:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:27:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:27:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:27:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:31,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:31,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:31,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:31,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:31,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:27:31,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:31,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:27:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:27:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:31,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:27:31,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-12 13:27:31,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:27:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:27:31,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:27:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:27:32,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070055365] [2020-10-12 13:27:32,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:27:32,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:27:32,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594197444] [2020-10-12 13:27:32,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:27:32,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:32,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:27:32,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:27:32,153 INFO L87 Difference]: Start difference. First operand 12149 states and 15124 transitions. Second operand 7 states. [2020-10-12 13:27:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:27:45,817 INFO L93 Difference]: Finished difference Result 21748 states and 28012 transitions. [2020-10-12 13:27:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:27:45,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-12 13:27:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:27:45,884 INFO L225 Difference]: With dead ends: 21748 [2020-10-12 13:27:45,884 INFO L226 Difference]: Without dead ends: 15100 [2020-10-12 13:27:45,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:27:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2020-10-12 13:27:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 14777. [2020-10-12 13:27:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14777 states. [2020-10-12 13:27:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 18210 transitions. [2020-10-12 13:27:47,143 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 18210 transitions. Word has length 178 [2020-10-12 13:27:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:27:47,143 INFO L479 AbstractCegarLoop]: Abstraction has 14777 states and 18210 transitions. [2020-10-12 13:27:47,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:27:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 18210 transitions. [2020-10-12 13:27:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 13:27:47,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:27:47,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:27:47,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:27:47,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:27:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:27:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash 794512120, now seen corresponding path program 1 times [2020-10-12 13:27:47,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:27:47,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755302160] [2020-10-12 13:27:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:27:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:47,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:47,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 13:27:48,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:27:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-10-12 13:27:48,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:27:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:27:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:27:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:48,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:48,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:27:48,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:48,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:27:48,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:27:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:48,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:27:48,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:27:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:48,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:48,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:27:48,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:48,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:27:48,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:27:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:27:48,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:27:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:27:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:27:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:27:48,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:27:48,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:27:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:27:48,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:27:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 13:27:48,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:27:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:27:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:27:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 13:27:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:27:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:27:48,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755302160] [2020-10-12 13:27:48,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:27:48,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:27:48,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421238799] [2020-10-12 13:27:48,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:27:48,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:27:48,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:27:48,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:27:48,766 INFO L87 Difference]: Start difference. First operand 14777 states and 18210 transitions. Second operand 7 states. [2020-10-12 13:28:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:05,025 INFO L93 Difference]: Finished difference Result 29248 states and 37867 transitions. [2020-10-12 13:28:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:28:05,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-12 13:28:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:05,064 INFO L225 Difference]: With dead ends: 29248 [2020-10-12 13:28:05,065 INFO L226 Difference]: Without dead ends: 12748 [2020-10-12 13:28:05,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:28:05,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12748 states. [2020-10-12 13:28:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12748 to 12257. [2020-10-12 13:28:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12257 states. [2020-10-12 13:28:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12257 states to 12257 states and 14502 transitions. [2020-10-12 13:28:05,337 INFO L78 Accepts]: Start accepts. Automaton has 12257 states and 14502 transitions. Word has length 205 [2020-10-12 13:28:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:05,337 INFO L479 AbstractCegarLoop]: Abstraction has 12257 states and 14502 transitions. [2020-10-12 13:28:05,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:28:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 12257 states and 14502 transitions. [2020-10-12 13:28:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-12 13:28:05,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:05,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:28:05,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:28:05,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2052761829, now seen corresponding path program 1 times [2020-10-12 13:28:05,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:05,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845814408] [2020-10-12 13:28:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:06,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:06,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 13:28:06,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:28:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-12 13:28:06,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:28:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:28:06,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 13:28:06,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:06,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:06,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:06,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:06,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:28:06,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:28:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:06,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:28:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:28:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:06,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:06,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:28:06,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 13:28:06,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:06,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:28:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:28:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:28:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:07,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:28:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:28:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-12 13:28:07,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:28:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:28:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 107 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:28:07,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845814408] [2020-10-12 13:28:07,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:28:07,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:28:07,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172664990] [2020-10-12 13:28:07,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:28:07,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:07,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:28:07,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:28:07,541 INFO L87 Difference]: Start difference. First operand 12257 states and 14502 transitions. Second operand 7 states. [2020-10-12 13:28:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:33,423 INFO L93 Difference]: Finished difference Result 45790 states and 57499 transitions. [2020-10-12 13:28:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:28:33,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-12 13:28:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:28:33,557 INFO L225 Difference]: With dead ends: 45790 [2020-10-12 13:28:33,557 INFO L226 Difference]: Without dead ends: 34306 [2020-10-12 13:28:33,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:28:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34306 states. [2020-10-12 13:28:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34306 to 31130. [2020-10-12 13:28:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31130 states. [2020-10-12 13:28:34,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31130 states to 31130 states and 38916 transitions. [2020-10-12 13:28:34,365 INFO L78 Accepts]: Start accepts. Automaton has 31130 states and 38916 transitions. Word has length 264 [2020-10-12 13:28:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:28:34,366 INFO L479 AbstractCegarLoop]: Abstraction has 31130 states and 38916 transitions. [2020-10-12 13:28:34,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:28:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 31130 states and 38916 transitions. [2020-10-12 13:28:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-12 13:28:34,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:28:34,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:28:34,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:28:34,372 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:28:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:28:34,372 INFO L82 PathProgramCache]: Analyzing trace with hash 331672621, now seen corresponding path program 1 times [2020-10-12 13:28:34,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:28:34,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549438665] [2020-10-12 13:28:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:28:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-12 13:28:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:28:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-12 13:28:36,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:28:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:28:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 13:28:36,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:28:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:36,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:36,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:28:36,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:28:36,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:28:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:28:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:36,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:28:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:28:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:28:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 13:28:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:28:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:28:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:28:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:36,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:28:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:28:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:36,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:28:36,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:28:36,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:28:36,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:28:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-12 13:28:36,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:28:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:28:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:28:36,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:28:36,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:28:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 107 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:28:36,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549438665] [2020-10-12 13:28:36,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:28:36,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:28:36,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237929312] [2020-10-12 13:28:36,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:28:36,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:28:36,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:28:36,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:28:36,843 INFO L87 Difference]: Start difference. First operand 31130 states and 38916 transitions. Second operand 7 states. [2020-10-12 13:28:59,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:28:59,959 INFO L93 Difference]: Finished difference Result 82840 states and 108832 transitions. [2020-10-12 13:28:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:28:59,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-12 13:28:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:00,121 INFO L225 Difference]: With dead ends: 82840 [2020-10-12 13:29:00,121 INFO L226 Difference]: Without dead ends: 52483 [2020-10-12 13:29:00,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:29:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52483 states. [2020-10-12 13:29:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52483 to 49809. [2020-10-12 13:29:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49809 states. [2020-10-12 13:29:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49809 states to 49809 states and 61649 transitions. [2020-10-12 13:29:01,122 INFO L78 Accepts]: Start accepts. Automaton has 49809 states and 61649 transitions. Word has length 268 [2020-10-12 13:29:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:01,123 INFO L479 AbstractCegarLoop]: Abstraction has 49809 states and 61649 transitions. [2020-10-12 13:29:01,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:01,123 INFO L276 IsEmpty]: Start isEmpty. Operand 49809 states and 61649 transitions. [2020-10-12 13:29:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-12 13:29:01,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:01,136 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:01,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:29:01,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:01,137 INFO L82 PathProgramCache]: Analyzing trace with hash 430512590, now seen corresponding path program 1 times [2020-10-12 13:29:01,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:01,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103547232] [2020-10-12 13:29:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:01,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:01,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:06,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-12 13:29:06,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:29:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 13:29:06,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-12 13:29:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 13:29:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:06,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:06,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:29:06,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:06,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:29:06,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:29:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:29:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:06,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:29:06,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 13:29:06,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:06,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:06,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:06,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-12 13:29:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:06,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:29:06,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:06,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:29:06,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:29:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:29:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:06,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:06,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:29:06,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 13:29:06,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:29:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 292 proven. 6 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-12 13:29:07,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103547232] [2020-10-12 13:29:07,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:07,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:29:07,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921160846] [2020-10-12 13:29:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:07,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:07,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:07,392 INFO L87 Difference]: Start difference. First operand 49809 states and 61649 transitions. Second operand 7 states. [2020-10-12 13:29:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:25,070 INFO L93 Difference]: Finished difference Result 118497 states and 152294 transitions. [2020-10-12 13:29:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 13:29:25,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-12 13:29:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:25,265 INFO L225 Difference]: With dead ends: 118497 [2020-10-12 13:29:25,265 INFO L226 Difference]: Without dead ends: 69461 [2020-10-12 13:29:25,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:29:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69461 states. [2020-10-12 13:29:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69461 to 67111. [2020-10-12 13:29:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67111 states. [2020-10-12 13:29:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67111 states to 67111 states and 86391 transitions. [2020-10-12 13:29:27,041 INFO L78 Accepts]: Start accepts. Automaton has 67111 states and 86391 transitions. Word has length 425 [2020-10-12 13:29:27,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:27,042 INFO L479 AbstractCegarLoop]: Abstraction has 67111 states and 86391 transitions. [2020-10-12 13:29:27,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:27,043 INFO L276 IsEmpty]: Start isEmpty. Operand 67111 states and 86391 transitions. [2020-10-12 13:29:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-12 13:29:27,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:27,063 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:29:27,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:29:27,063 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:27,065 INFO L82 PathProgramCache]: Analyzing trace with hash -410718328, now seen corresponding path program 1 times [2020-10-12 13:29:27,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:27,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496436688] [2020-10-12 13:29:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:28,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:28,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-12 13:29:28,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-10-12 13:29:28,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:29:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:29:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:29,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:29:29,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:29,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:29:29,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 13:29:29,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:29:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:29:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 13:29:29,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:29:29,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 13:29:29,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:29,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-12 13:29:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:29,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:29,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:29,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-12 13:29:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:29:29,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-12 13:29:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 153 proven. 82 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-12 13:29:30,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496436688] [2020-10-12 13:29:30,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:30,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:29:30,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063741942] [2020-10-12 13:29:30,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:30,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:30,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:30,312 INFO L87 Difference]: Start difference. First operand 67111 states and 86391 transitions. Second operand 7 states. [2020-10-12 13:29:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:29:51,604 INFO L93 Difference]: Finished difference Result 163504 states and 219235 transitions. [2020-10-12 13:29:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:29:51,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 456 [2020-10-12 13:29:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:29:51,860 INFO L225 Difference]: With dead ends: 163504 [2020-10-12 13:29:51,860 INFO L226 Difference]: Without dead ends: 97166 [2020-10-12 13:29:51,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:29:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97166 states. [2020-10-12 13:29:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97166 to 95530. [2020-10-12 13:29:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95530 states. [2020-10-12 13:29:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95530 states to 95530 states and 125536 transitions. [2020-10-12 13:29:55,665 INFO L78 Accepts]: Start accepts. Automaton has 95530 states and 125536 transitions. Word has length 456 [2020-10-12 13:29:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:29:55,666 INFO L479 AbstractCegarLoop]: Abstraction has 95530 states and 125536 transitions. [2020-10-12 13:29:55,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:29:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 95530 states and 125536 transitions. [2020-10-12 13:29:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-10-12 13:29:55,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:29:55,683 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:29:55,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:29:55,684 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:29:55,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:29:55,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2010590987, now seen corresponding path program 1 times [2020-10-12 13:29:55,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:29:55,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377354510] [2020-10-12 13:29:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:29:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:57,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:57,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-12 13:29:57,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1739 [2020-10-12 13:29:57,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:29:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-12 13:29:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-12 13:29:57,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:57,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:29:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:57,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:57,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:29:57,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:57,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:29:57,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:57,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:29:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:29:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:57,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:57,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:29:57,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:29:57,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:29:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:29:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:57,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:29:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:57,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 13:29:57,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:29:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 13:29:57,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:29:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:29:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:29:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:58,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-12 13:29:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:29:58,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:58,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:29:58,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:29:58,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 13:29:58,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:29:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-12 13:29:58,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:29:58,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:29:58,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:29:58,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-12 13:29:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:29:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 312 proven. 24 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-12 13:29:58,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377354510] [2020-10-12 13:29:58,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:29:58,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:29:58,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228793095] [2020-10-12 13:29:59,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:29:59,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:29:59,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:29:59,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:29:59,001 INFO L87 Difference]: Start difference. First operand 95530 states and 125536 transitions. Second operand 7 states.