/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/Problem13_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:34:31,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:34:31,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:34:31,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:34:31,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:34:31,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:34:31,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:34:31,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:34:31,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:34:31,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:34:31,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:34:31,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:34:31,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:34:31,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:34:31,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:34:31,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:34:31,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:34:31,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:34:31,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:34:31,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:34:31,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:34:31,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:34:31,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:34:31,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:34:31,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:34:31,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:34:31,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:34:31,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:34:31,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:34:31,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:34:31,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:34:31,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:34:31,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:34:31,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:34:31,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:34:31,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:34:31,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:34:31,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:34:31,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:34:31,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:34:31,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:34:31,880 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 13:34:31,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:34:31,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:34:31,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:34:31,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:34:31,906 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:34:31,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:34:31,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:34:31,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:34:31,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:34:31,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:34:31,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:34:31,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:34:31,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:34:31,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:34:31,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:34:31,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:34:31,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:34:31,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:34:31,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:34:31,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:34:31,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:34:31,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:34:31,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:34:31,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:34:31,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:34:31,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:34:31,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:34:31,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:34:31,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:34:31,911 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 13:34:32,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:34:32,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:34:32,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:34:32,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:34:32,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:34:32,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-12 13:34:32,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d300e4f/64d0ce0123e54d978b4f42a8636e4aa8/FLAG22861553c [2020-10-12 13:34:33,171 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:34:33,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label09.c [2020-10-12 13:34:33,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d300e4f/64d0ce0123e54d978b4f42a8636e4aa8/FLAG22861553c [2020-10-12 13:34:33,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d300e4f/64d0ce0123e54d978b4f42a8636e4aa8 [2020-10-12 13:34:33,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:34:33,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:34:33,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:34:33,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:34:33,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:34:33,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:34:33" (1/1) ... [2020-10-12 13:34:33,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ce6d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:33, skipping insertion in model container [2020-10-12 13:34:33,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:34:33" (1/1) ... [2020-10-12 13:34:33,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:34:33,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:34:35,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:34:35,708 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:34:36,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:34:36,456 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:34:36,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36 WrapperNode [2020-10-12 13:34:36,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:34:36,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:34:36,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:34:36,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:34:36,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (1/1) ... [2020-10-12 13:34:36,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (1/1) ... [2020-10-12 13:34:36,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (1/1) ... [2020-10-12 13:34:36,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (1/1) ... [2020-10-12 13:34:36,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (1/1) ... [2020-10-12 13:34:36,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (1/1) ... [2020-10-12 13:34:36,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (1/1) ... [2020-10-12 13:34:36,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:34:36,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:34:36,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:34:36,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:34:36,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (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 13:34:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:34:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:34:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:34:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:34:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:34:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:34:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:34:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:34:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:34:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:34:48,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:34:48,147 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:34:48,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:34:48 BoogieIcfgContainer [2020-10-12 13:34:48,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:34:48,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:34:48,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:34:48,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:34:48,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:34:33" (1/3) ... [2020-10-12 13:34:48,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aab9d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:34:48, skipping insertion in model container [2020-10-12 13:34:48,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:34:36" (2/3) ... [2020-10-12 13:34:48,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aab9d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:34:48, skipping insertion in model container [2020-10-12 13:34:48,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:34:48" (3/3) ... [2020-10-12 13:34:48,193 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label09.c [2020-10-12 13:34:48,205 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:34:48,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:34:48,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:34:48,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:34:48,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:34:48,259 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:34:48,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:34:48,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:34:48,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:34:48,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:34:48,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:34:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:34:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 13:34:48,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:34:48,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:34:48,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:34:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:34:48,321 INFO L82 PathProgramCache]: Analyzing trace with hash 469148887, now seen corresponding path program 1 times [2020-10-12 13:34:48,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:34:48,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794094145] [2020-10-12 13:34:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:34:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:34:49,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-12 13:34:49,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:34:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:34:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:34:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:34:49,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:34:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:34:49,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:34:49,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:34:49,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:34:49,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:34:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:34:49,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:34:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:34:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:34:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:34:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:34:49,275 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 13:34:49,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794094145] [2020-10-12 13:34:49,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:34:49,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:34:49,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532376164] [2020-10-12 13:34:49,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:34:49,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:34:49,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:34:49,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:34:49,306 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-12 13:35:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:35:05,601 INFO L93 Difference]: Finished difference Result 3204 states and 5913 transitions. [2020-10-12 13:35:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:35:05,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-12 13:35:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:35:05,642 INFO L225 Difference]: With dead ends: 3204 [2020-10-12 13:35:05,642 INFO L226 Difference]: Without dead ends: 2006 [2020-10-12 13:35:05,654 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 13:35:05,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2020-10-12 13:35:05,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 1920. [2020-10-12 13:35:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-10-12 13:35:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3311 transitions. [2020-10-12 13:35:05,861 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3311 transitions. Word has length 66 [2020-10-12 13:35:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:35:05,863 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 3311 transitions. [2020-10-12 13:35:05,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:35:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3311 transitions. [2020-10-12 13:35:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-12 13:35:05,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:35:05,878 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, 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] [2020-10-12 13:35:05,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:35:05,879 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:35:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:35:05,879 INFO L82 PathProgramCache]: Analyzing trace with hash -97971073, now seen corresponding path program 1 times [2020-10-12 13:35:05,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:35:05,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268752520] [2020-10-12 13:35:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:35:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:08,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:08,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:35:08,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:35:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2088 [2020-10-12 13:35:08,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:35:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:35:08,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 13:35:08,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:35:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:08,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:08,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:35:08,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:08,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:35:08,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:35:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:08,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:08,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:35:08,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:08,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:35:08,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:08,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:35:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:35:08,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268752520] [2020-10-12 13:35:08,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:35:08,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:35:08,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420246128] [2020-10-12 13:35:08,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:35:08,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:08,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:35:08,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:35:08,379 INFO L87 Difference]: Start difference. First operand 1920 states and 3311 transitions. Second operand 7 states. [2020-10-12 13:35:26,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:35:26,819 INFO L93 Difference]: Finished difference Result 5615 states and 9775 transitions. [2020-10-12 13:35:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:35:26,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-12 13:35:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:35:26,846 INFO L225 Difference]: With dead ends: 5615 [2020-10-12 13:35:26,847 INFO L226 Difference]: Without dead ends: 3701 [2020-10-12 13:35:26,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:35:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2020-10-12 13:35:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 3632. [2020-10-12 13:35:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3632 states. [2020-10-12 13:35:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5494 transitions. [2020-10-12 13:35:26,985 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5494 transitions. Word has length 135 [2020-10-12 13:35:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:35:26,988 INFO L479 AbstractCegarLoop]: Abstraction has 3632 states and 5494 transitions. [2020-10-12 13:35:26,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:35:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5494 transitions. [2020-10-12 13:35:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 13:35:26,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:35:26,998 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, 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] [2020-10-12 13:35:26,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:35:26,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:35:26,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:35:26,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1688315355, now seen corresponding path program 1 times [2020-10-12 13:35:27,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:35:27,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378061435] [2020-10-12 13:35:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:35:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:27,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:27,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:28,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:28,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 13:35:28,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:35:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-10-12 13:35:28,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:35:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:35:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 13:35:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:28,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:28,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:28,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:28,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 13:35:28,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:28,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:28,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:35:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:35:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:28,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:28,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 13:35:28,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:35:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 13:35:28,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:28,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:35:28,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:35:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:35:28,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378061435] [2020-10-12 13:35:28,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:35:28,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:35:28,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126052821] [2020-10-12 13:35:28,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:35:28,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:28,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:35:28,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:35:28,840 INFO L87 Difference]: Start difference. First operand 3632 states and 5494 transitions. Second operand 7 states. [2020-10-12 13:35:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:35:56,689 INFO L93 Difference]: Finished difference Result 14191 states and 22257 transitions. [2020-10-12 13:35:56,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:35:56,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-12 13:35:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:35:56,759 INFO L225 Difference]: With dead ends: 14191 [2020-10-12 13:35:56,759 INFO L226 Difference]: Without dead ends: 10565 [2020-10-12 13:35:56,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 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 13:35:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10565 states. [2020-10-12 13:35:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10565 to 10507. [2020-10-12 13:35:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10507 states. [2020-10-12 13:35:57,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10507 states to 10507 states and 14837 transitions. [2020-10-12 13:35:57,134 INFO L78 Accepts]: Start accepts. Automaton has 10507 states and 14837 transitions. Word has length 137 [2020-10-12 13:35:57,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:35:57,136 INFO L479 AbstractCegarLoop]: Abstraction has 10507 states and 14837 transitions. [2020-10-12 13:35:57,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:35:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 10507 states and 14837 transitions. [2020-10-12 13:35:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-12 13:35:57,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:35:57,139 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, 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] [2020-10-12 13:35:57,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:35:57,140 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:35:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:35:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash 143070131, now seen corresponding path program 1 times [2020-10-12 13:35:57,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:35:57,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728713181] [2020-10-12 13:35:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:35:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:57,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:59,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:59,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 13:35:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:35:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-12 13:35:59,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:35:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:35:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:35:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 13:35:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:35:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:59,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:59,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:35:59,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:59,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:35:59,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:59,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:35:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:35:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:35:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:35:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:35:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:35:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:35:59,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:35:59,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:35:59,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:35:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 13:35:59,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:35:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:35:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:35:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:35:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:35:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:35:59,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728713181] [2020-10-12 13:35:59,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:35:59,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:35:59,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28216955] [2020-10-12 13:35:59,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:35:59,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:35:59,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:35:59,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:35:59,548 INFO L87 Difference]: Start difference. First operand 10507 states and 14837 transitions. Second operand 7 states. [2020-10-12 13:36:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:36:33,370 INFO L93 Difference]: Finished difference Result 31809 states and 47467 transitions. [2020-10-12 13:36:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:36:33,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-12 13:36:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:36:33,523 INFO L225 Difference]: With dead ends: 31809 [2020-10-12 13:36:33,524 INFO L226 Difference]: Without dead ends: 21308 [2020-10-12 13:36:33,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 13:36:33,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21308 states. [2020-10-12 13:36:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21308 to 20209. [2020-10-12 13:36:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20209 states. [2020-10-12 13:36:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20209 states to 20209 states and 27705 transitions. [2020-10-12 13:36:34,369 INFO L78 Accepts]: Start accepts. Automaton has 20209 states and 27705 transitions. Word has length 141 [2020-10-12 13:36:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:36:34,370 INFO L479 AbstractCegarLoop]: Abstraction has 20209 states and 27705 transitions. [2020-10-12 13:36:34,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:36:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 20209 states and 27705 transitions. [2020-10-12 13:36:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 13:36:34,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:36:34,374 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, 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] [2020-10-12 13:36:34,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:36:34,375 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:36:34,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:36:34,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1640634765, now seen corresponding path program 1 times [2020-10-12 13:36:34,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:36:34,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439580420] [2020-10-12 13:36:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:36:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:36,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:36,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-12 13:36:36,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:36:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-12 13:36:36,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:36:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:36:36,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 13:36:36,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:36,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:36:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:36,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:36:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:36:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:36:36,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:36:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:36:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:36:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:36,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:36:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:36:36,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:36:36,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:36:36,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:36:36,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:36:36,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 13:36:36,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:36:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:36:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:36:36,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:36:36,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:36:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:36:36,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439580420] [2020-10-12 13:36:36,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:36:36,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:36:36,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850891681] [2020-10-12 13:36:36,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:36:36,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:36:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:36:36,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:36:36,810 INFO L87 Difference]: Start difference. First operand 20209 states and 27705 transitions. Second operand 7 states. [2020-10-12 13:37:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:37:00,004 INFO L93 Difference]: Finished difference Result 42291 states and 62742 transitions. [2020-10-12 13:37:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:37:00,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-10-12 13:37:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:37:00,146 INFO L225 Difference]: With dead ends: 42291 [2020-10-12 13:37:00,146 INFO L226 Difference]: Without dead ends: 22088 [2020-10-12 13:37:00,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:37:00,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22088 states. [2020-10-12 13:37:01,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22088 to 21299. [2020-10-12 13:37:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21299 states. [2020-10-12 13:37:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21299 states to 21299 states and 29140 transitions. [2020-10-12 13:37:01,182 INFO L78 Accepts]: Start accepts. Automaton has 21299 states and 29140 transitions. Word has length 173 [2020-10-12 13:37:01,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:37:01,183 INFO L479 AbstractCegarLoop]: Abstraction has 21299 states and 29140 transitions. [2020-10-12 13:37:01,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:37:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 21299 states and 29140 transitions. [2020-10-12 13:37:01,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 13:37:01,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:37:01,190 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:37:01,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:37:01,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:37:01,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:37:01,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1936836955, now seen corresponding path program 1 times [2020-10-12 13:37:01,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:37:01,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494541579] [2020-10-12 13:37:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:37:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:06,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:06,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 13:37:06,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:37:06,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 13:37:06,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:06,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:37:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:37:06,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:37:06,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:37:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:06,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:06,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:37:06,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:37:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:37:06,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:37:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:37:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:37:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:37:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:06,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:06,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:37:06,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:37:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 13:37:06,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:37:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:37:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:37:06,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:06,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 13:37:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:37:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:37:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:37:06,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:37:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:37:06,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:37:06,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:37:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:37:07,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494541579] [2020-10-12 13:37:07,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:37:07,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:37:07,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313222174] [2020-10-12 13:37:07,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:37:07,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:37:07,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:37:07,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:37:07,299 INFO L87 Difference]: Start difference. First operand 21299 states and 29140 transitions. Second operand 8 states. [2020-10-12 13:37:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:37:36,142 INFO L93 Difference]: Finished difference Result 62632 states and 92546 transitions. [2020-10-12 13:37:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:37:36,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-12 13:37:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:37:36,327 INFO L225 Difference]: With dead ends: 62632 [2020-10-12 13:37:36,328 INFO L226 Difference]: Without dead ends: 42148 [2020-10-12 13:37:36,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:37:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42148 states. [2020-10-12 13:37:37,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42148 to 38872. [2020-10-12 13:37:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38872 states. [2020-10-12 13:37:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38872 states to 38872 states and 51661 transitions. [2020-10-12 13:37:37,685 INFO L78 Accepts]: Start accepts. Automaton has 38872 states and 51661 transitions. Word has length 218 [2020-10-12 13:37:37,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:37:37,686 INFO L479 AbstractCegarLoop]: Abstraction has 38872 states and 51661 transitions. [2020-10-12 13:37:37,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:37:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 38872 states and 51661 transitions. [2020-10-12 13:37:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 13:37:37,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:37:37,693 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, 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, 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 13:37:37,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:37:37,694 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:37:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:37:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1097743109, now seen corresponding path program 1 times [2020-10-12 13:37:37,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:37:37,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663832396] [2020-10-12 13:37:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:37:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:37,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:42,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:42,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-12 13:37:42,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:37:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 13:37:42,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:37:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:37:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:37:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:42,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:37:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:42,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:37:42,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:37:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:37:42,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:37:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:37:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:37:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:37:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:43,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:43,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:37:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:37:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 13:37:43,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:37:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:37:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:37:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:37:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:37:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:37:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:37:43,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:37:43,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:37:43,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:37:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:37:43,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:37:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:37:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 13:37:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:37:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:37:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 118 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:37:43,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663832396] [2020-10-12 13:37:43,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:37:43,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:37:43,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452543678] [2020-10-12 13:37:43,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:37:43,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:37:43,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:37:43,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:37:43,559 INFO L87 Difference]: Start difference. First operand 38872 states and 51661 transitions. Second operand 7 states. [2020-10-12 13:38:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:38:09,372 INFO L93 Difference]: Finished difference Result 77747 states and 104662 transitions. [2020-10-12 13:38:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:38:09,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-12 13:38:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:38:09,485 INFO L225 Difference]: With dead ends: 77747 [2020-10-12 13:38:09,486 INFO L226 Difference]: Without dead ends: 39690 [2020-10-12 13:38:09,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:38:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39690 states. [2020-10-12 13:38:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39690 to 39044. [2020-10-12 13:38:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39044 states. [2020-10-12 13:38:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39044 states to 39044 states and 51981 transitions. [2020-10-12 13:38:10,335 INFO L78 Accepts]: Start accepts. Automaton has 39044 states and 51981 transitions. Word has length 266 [2020-10-12 13:38:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:38:10,336 INFO L479 AbstractCegarLoop]: Abstraction has 39044 states and 51981 transitions. [2020-10-12 13:38:10,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:38:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 39044 states and 51981 transitions. [2020-10-12 13:38:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-12 13:38:10,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:38:10,348 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:38:10,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:38:10,348 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:38:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:38:10,349 INFO L82 PathProgramCache]: Analyzing trace with hash 724287405, now seen corresponding path program 1 times [2020-10-12 13:38:10,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:38:10,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099019236] [2020-10-12 13:38:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:38:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:10,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:11,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-12 13:38:11,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:38:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-12 13:38:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:38:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 13:38:11,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:38:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:11,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:38:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:11,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:11,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:38:11,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:38:11,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:38:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:38:11,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:38:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:11,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:38:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:11,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:11,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:38:11,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 13:38:11,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:38:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:38:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:38:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:38:12,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:38:12,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:38:12,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:38:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 13:38:12,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:38:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:38:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:38:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:38:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:38:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:38:12,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099019236] [2020-10-12 13:38:12,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:38:12,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:38:12,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526288892] [2020-10-12 13:38:12,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:38:12,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:38:12,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:38:12,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:38:12,661 INFO L87 Difference]: Start difference. First operand 39044 states and 51981 transitions. Second operand 8 states.