/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=NARROWEST --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/Problem17_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:42:14,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:42:14,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:42:14,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:42:14,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:42:14,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:42:14,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:42:14,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:42:14,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:42:14,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:42:14,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:42:14,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:42:14,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:42:14,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:42:14,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:42:14,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:42:14,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:42:14,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:42:14,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:42:14,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:42:14,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:42:14,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:42:14,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:42:14,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:42:14,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:42:14,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:42:14,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:42:14,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:42:14,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:42:14,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:42:14,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:42:14,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:42:14,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:42:14,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:42:14,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:42:14,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:42:14,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:42:14,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:42:14,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:42:14,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:42:14,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:42:14,871 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 [2020-10-13 09:42:14,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:42:14,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:42:14,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:42:14,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:42:14,899 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:42:14,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:42:14,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:42:14,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:42:14,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:42:14,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:42:14,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:42:14,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:42:14,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:42:14,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:42:14,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:42:14,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:42:14,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:42:14,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:42:14,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:42:14,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:42:14,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:42:14,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:42:14,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:42:14,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:42:14,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:42:14,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:42:14,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:42:14,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:42:14,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:42:14,905 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:42:15,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:42:15,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:42:15,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:42:15,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:42:15,282 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:42:15,283 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2020-10-13 09:42:15,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a36dcd98/48dbc8d655d6434aaa26e81d9184d6cc/FLAG8de22e3be [2020-10-13 09:42:16,175 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:42:16,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2020-10-13 09:42:16,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a36dcd98/48dbc8d655d6434aaa26e81d9184d6cc/FLAG8de22e3be [2020-10-13 09:42:16,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a36dcd98/48dbc8d655d6434aaa26e81d9184d6cc [2020-10-13 09:42:16,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:42:16,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:42:16,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:42:16,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:42:16,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:42:16,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:16" (1/1) ... [2020-10-13 09:42:16,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:16, skipping insertion in model container [2020-10-13 09:42:16,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:42:16" (1/1) ... [2020-10-13 09:42:16,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:42:16,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:42:17,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:42:17,405 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:42:17,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:42:17,840 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:42:17,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17 WrapperNode [2020-10-13 09:42:17,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:42:17,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:42:17,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:42:17,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:42:17,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (1/1) ... [2020-10-13 09:42:17,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (1/1) ... [2020-10-13 09:42:17,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (1/1) ... [2020-10-13 09:42:17,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (1/1) ... [2020-10-13 09:42:18,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (1/1) ... [2020-10-13 09:42:18,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (1/1) ... [2020-10-13 09:42:18,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (1/1) ... [2020-10-13 09:42:18,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:42:18,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:42:18,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:42:18,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:42:18,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (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 [2020-10-13 09:42:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:42:18,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:42:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:42:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:42:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:42:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:42:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:42:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:42:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:42:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:42:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:42:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:42:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:42:27,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:42:27,742 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:42:27,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:27 BoogieIcfgContainer [2020-10-13 09:42:27,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:42:27,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:42:27,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:42:27,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:42:27,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:42:16" (1/3) ... [2020-10-13 09:42:27,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d171dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:27, skipping insertion in model container [2020-10-13 09:42:27,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:42:17" (2/3) ... [2020-10-13 09:42:27,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d171dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:42:27, skipping insertion in model container [2020-10-13 09:42:27,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:42:27" (3/3) ... [2020-10-13 09:42:27,767 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label59.c [2020-10-13 09:42:27,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:42:27,793 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:42:27,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:42:27,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:42:27,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:42:27,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:42:27,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:42:27,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:42:27,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:42:27,847 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:42:27,847 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:42:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:42:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 09:42:27,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:27,895 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] [2020-10-13 09:42:27,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:27,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1981769895, now seen corresponding path program 1 times [2020-10-13 09:42:27,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:27,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479762688] [2020-10-13 09:42:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:28,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 09:42:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-13 09:42:28,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:42:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:42:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:42:28,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:42:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:28,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:28,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:42:28,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:28,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:42:28,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:42:28,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479762688] [2020-10-13 09:42:28,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:42:28,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:42:28,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819120139] [2020-10-13 09:42:28,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:42:28,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:28,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:42:28,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:42:28,992 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:42:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:42,344 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-13 09:42:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:42,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 09:42:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:42,373 INFO L225 Difference]: With dead ends: 1693 [2020-10-13 09:42:42,374 INFO L226 Difference]: Without dead ends: 1011 [2020-10-13 09:42:42,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-13 09:42:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-13 09:42:42,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-13 09:42:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-13 09:42:42,512 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 38 [2020-10-13 09:42:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:42,513 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-13 09:42:42,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:42:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-13 09:42:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 09:42:42,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:42,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:42:42,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:42:42,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash 623756200, now seen corresponding path program 1 times [2020-10-13 09:42:42,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:42,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029989619] [2020-10-13 09:42:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:42,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:43,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:43,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 09:42:43,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:42:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-13 09:42:43,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:42:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 09:42:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:42:43,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:43,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:43,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:43,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:43,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:42:43,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:43,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:43,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:42:43,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:43,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:43,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:42:43,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:43,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:42:43,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:42:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:42:44,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029989619] [2020-10-13 09:42:44,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:44,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:42:44,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426741671] [2020-10-13 09:42:44,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:44,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:44,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:44,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:44,049 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 5 states. [2020-10-13 09:42:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:58,020 INFO L93 Difference]: Finished difference Result 2874 states and 4639 transitions. [2020-10-13 09:42:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:58,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 09:42:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:58,039 INFO L225 Difference]: With dead ends: 2874 [2020-10-13 09:42:58,039 INFO L226 Difference]: Without dead ends: 1894 [2020-10-13 09:42:58,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:42:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-13 09:42:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1881. [2020-10-13 09:42:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-13 09:42:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2658 transitions. [2020-10-13 09:42:58,105 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2658 transitions. Word has length 107 [2020-10-13 09:42:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:58,106 INFO L479 AbstractCegarLoop]: Abstraction has 1881 states and 2658 transitions. [2020-10-13 09:42:58,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:42:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2658 transitions. [2020-10-13 09:42:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 09:42:58,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:58,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:42:58,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:42:58,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:58,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash 387152544, now seen corresponding path program 1 times [2020-10-13 09:42:58,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:58,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851765620] [2020-10-13 09:42:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:58,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:59,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:42:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:42:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-13 09:42:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 09:42:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 09:42:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:59,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:59,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:42:59,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:59,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:59,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:59,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:42:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:42:59,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:42:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:42:59,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851765620] [2020-10-13 09:42:59,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:59,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:42:59,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023260529] [2020-10-13 09:42:59,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:59,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:59,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:59,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:59,430 INFO L87 Difference]: Start difference. First operand 1881 states and 2658 transitions. Second operand 5 states. [2020-10-13 09:43:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:12,915 INFO L93 Difference]: Finished difference Result 5525 states and 7887 transitions. [2020-10-13 09:43:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:12,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 09:43:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:12,942 INFO L225 Difference]: With dead ends: 5525 [2020-10-13 09:43:12,942 INFO L226 Difference]: Without dead ends: 3650 [2020-10-13 09:43:12,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:12,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2020-10-13 09:43:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3642. [2020-10-13 09:43:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-10-13 09:43:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 4859 transitions. [2020-10-13 09:43:13,047 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 4859 transitions. Word has length 111 [2020-10-13 09:43:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:13,047 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 4859 transitions. [2020-10-13 09:43:13,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 4859 transitions. [2020-10-13 09:43:13,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 09:43:13,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:13,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:13,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:43:13,052 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:13,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:13,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1332632236, now seen corresponding path program 1 times [2020-10-13 09:43:13,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:13,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215187444] [2020-10-13 09:43:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:14,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:43:14,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:43:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-13 09:43:14,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:14,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:43:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 09:43:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:14,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:14,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:14,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:14,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:43:14,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:14,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:14,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:14,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:14,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:14,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:43:14,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:14,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:43:14,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:14,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:14,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:43:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:14,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215187444] [2020-10-13 09:43:14,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:14,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:14,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607524243] [2020-10-13 09:43:14,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:14,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:14,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:14,299 INFO L87 Difference]: Start difference. First operand 3642 states and 4859 transitions. Second operand 5 states. [2020-10-13 09:43:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:26,798 INFO L93 Difference]: Finished difference Result 7291 states and 10229 transitions. [2020-10-13 09:43:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:26,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 09:43:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:26,827 INFO L225 Difference]: With dead ends: 7291 [2020-10-13 09:43:26,828 INFO L226 Difference]: Without dead ends: 5411 [2020-10-13 09:43:26,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-10-13 09:43:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5402. [2020-10-13 09:43:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5402 states. [2020-10-13 09:43:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 6919 transitions. [2020-10-13 09:43:26,971 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 6919 transitions. Word has length 114 [2020-10-13 09:43:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:26,971 INFO L479 AbstractCegarLoop]: Abstraction has 5402 states and 6919 transitions. [2020-10-13 09:43:26,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 6919 transitions. [2020-10-13 09:43:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 09:43:26,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:26,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:26,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:43:26,975 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:26,976 INFO L82 PathProgramCache]: Analyzing trace with hash -808205651, now seen corresponding path program 1 times [2020-10-13 09:43:26,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:26,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964584289] [2020-10-13 09:43:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:27,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:28,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:28,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:43:28,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:43:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-10-13 09:43:28,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:43:28,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:43:28,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:28,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:28,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:43:28,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:43:28,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:28,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:28,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:43:28,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 09:43:28,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:28,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:28,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:43:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:28,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964584289] [2020-10-13 09:43:28,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:28,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:28,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273588522] [2020-10-13 09:43:28,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:28,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:28,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:28,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:28,478 INFO L87 Difference]: Start difference. First operand 5402 states and 6919 transitions. Second operand 5 states. [2020-10-13 09:43:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:40,582 INFO L93 Difference]: Finished difference Result 9074 states and 11732 transitions. [2020-10-13 09:43:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:40,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 09:43:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:40,615 INFO L225 Difference]: With dead ends: 9074 [2020-10-13 09:43:40,615 INFO L226 Difference]: Without dead ends: 5410 [2020-10-13 09:43:40,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:43:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2020-10-13 09:43:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 5402. [2020-10-13 09:43:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5402 states. [2020-10-13 09:43:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 6915 transitions. [2020-10-13 09:43:40,798 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 6915 transitions. Word has length 126 [2020-10-13 09:43:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:40,800 INFO L479 AbstractCegarLoop]: Abstraction has 5402 states and 6915 transitions. [2020-10-13 09:43:40,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 6915 transitions. [2020-10-13 09:43:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 09:43:40,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:40,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:43:40,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:43:40,804 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:40,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:40,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1175831963, now seen corresponding path program 1 times [2020-10-13 09:43:40,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:40,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964540102] [2020-10-13 09:43:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 09:43:41,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:43:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-13 09:43:41,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 09:43:41,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 09:43:41,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:41,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:43:41,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:43:41,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:43:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:43:41,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:41,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964540102] [2020-10-13 09:43:41,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:41,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:41,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348232496] [2020-10-13 09:43:41,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:41,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:41,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:41,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:41,869 INFO L87 Difference]: Start difference. First operand 5402 states and 6915 transitions. Second operand 5 states. [2020-10-13 09:44:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:02,310 INFO L93 Difference]: Finished difference Result 12612 states and 16558 transitions. [2020-10-13 09:44:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:02,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 09:44:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:02,353 INFO L225 Difference]: With dead ends: 12612 [2020-10-13 09:44:02,356 INFO L226 Difference]: Without dead ends: 8972 [2020-10-13 09:44:02,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2020-10-13 09:44:02,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 8951. [2020-10-13 09:44:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8951 states. [2020-10-13 09:44:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8951 states to 8951 states and 11419 transitions. [2020-10-13 09:44:02,646 INFO L78 Accepts]: Start accepts. Automaton has 8951 states and 11419 transitions. Word has length 130 [2020-10-13 09:44:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:02,647 INFO L479 AbstractCegarLoop]: Abstraction has 8951 states and 11419 transitions. [2020-10-13 09:44:02,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8951 states and 11419 transitions. [2020-10-13 09:44:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 09:44:02,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:02,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:02,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:44:02,651 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:02,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:02,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1702711600, now seen corresponding path program 1 times [2020-10-13 09:44:02,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:02,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089545855] [2020-10-13 09:44:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:44:03,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-13 09:44:03,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:44:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:44:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 09:44:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:03,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:03,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:44:03,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:44:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:03,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:03,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:44:03,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:03,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 09:44:03,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:03,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:44:03,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:44:03,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:44:03,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089545855] [2020-10-13 09:44:03,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:44:03,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:44:03,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421071613] [2020-10-13 09:44:03,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:44:03,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:03,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:44:03,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:44:03,436 INFO L87 Difference]: Start difference. First operand 8951 states and 11419 transitions. Second operand 7 states. [2020-10-13 09:44:18,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:18,688 INFO L93 Difference]: Finished difference Result 20174 states and 26326 transitions. [2020-10-13 09:44:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:44:18,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-13 09:44:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:18,713 INFO L225 Difference]: With dead ends: 20174 [2020-10-13 09:44:18,713 INFO L226 Difference]: Without dead ends: 8585 [2020-10-13 09:44:18,736 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 [2020-10-13 09:44:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2020-10-13 09:44:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8148. [2020-10-13 09:44:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8148 states. [2020-10-13 09:44:18,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8148 states to 8148 states and 9694 transitions. [2020-10-13 09:44:18,903 INFO L78 Accepts]: Start accepts. Automaton has 8148 states and 9694 transitions. Word has length 135 [2020-10-13 09:44:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:18,903 INFO L479 AbstractCegarLoop]: Abstraction has 8148 states and 9694 transitions. [2020-10-13 09:44:18,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:44:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8148 states and 9694 transitions. [2020-10-13 09:44:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 09:44:18,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:18,907 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:44:18,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:44:18,907 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:18,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:18,907 INFO L82 PathProgramCache]: Analyzing trace with hash -336833263, now seen corresponding path program 1 times [2020-10-13 09:44:18,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:18,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019946508] [2020-10-13 09:44:18,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:21,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 09:44:22,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:44:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3668 [2020-10-13 09:44:22,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:44:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:44:22,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:22,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:22,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:22,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:22,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:22,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:22,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:44:22,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:44:22,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:22,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:22,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:22,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:44:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:23,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:23,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:44:23,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:44:23,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:44:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:44:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:44:23,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019946508] [2020-10-13 09:44:23,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:23,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:23,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002330662] [2020-10-13 09:44:23,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:23,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:23,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:23,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:23,174 INFO L87 Difference]: Start difference. First operand 8148 states and 9694 transitions. Second operand 5 states. [2020-10-13 09:44:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:33,510 INFO L93 Difference]: Finished difference Result 16326 states and 19436 transitions. [2020-10-13 09:44:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:33,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-13 09:44:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:33,544 INFO L225 Difference]: With dead ends: 16326 [2020-10-13 09:44:33,544 INFO L226 Difference]: Without dead ends: 8152 [2020-10-13 09:44:33,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8152 states. [2020-10-13 09:44:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8152 to 8148. [2020-10-13 09:44:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8148 states. [2020-10-13 09:44:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8148 states to 8148 states and 9686 transitions. [2020-10-13 09:44:33,717 INFO L78 Accepts]: Start accepts. Automaton has 8148 states and 9686 transitions. Word has length 200 [2020-10-13 09:44:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:33,718 INFO L479 AbstractCegarLoop]: Abstraction has 8148 states and 9686 transitions. [2020-10-13 09:44:33,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 8148 states and 9686 transitions. [2020-10-13 09:44:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 09:44:33,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:33,724 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, 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, 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] [2020-10-13 09:44:33,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:44:33,724 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1759998660, now seen corresponding path program 1 times [2020-10-13 09:44:33,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:33,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601012360] [2020-10-13 09:44:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:38,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 09:44:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:44:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 09:44:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-13 09:44:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 09:44:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:38,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:38,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:38,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:38,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:38,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:44:38,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:38,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:38,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:39,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:39,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:44:39,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:44:39,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:44:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:39,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:39,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:44:39,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:44:39,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:39,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:44:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:39,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:39,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:44:39,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:44:39,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:44:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-13 09:44:39,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601012360] [2020-10-13 09:44:39,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:39,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:39,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381564223] [2020-10-13 09:44:39,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:39,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:39,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:39,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:39,265 INFO L87 Difference]: Start difference. First operand 8148 states and 9686 transitions. Second operand 5 states. [2020-10-13 09:44:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:54,791 INFO L93 Difference]: Finished difference Result 20255 states and 24629 transitions. [2020-10-13 09:44:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:44:54,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2020-10-13 09:44:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:54,826 INFO L225 Difference]: With dead ends: 20255 [2020-10-13 09:44:54,826 INFO L226 Difference]: Without dead ends: 11232 [2020-10-13 09:44:54,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:44:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11232 states. [2020-10-13 09:44:55,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11232 to 11228. [2020-10-13 09:44:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11228 states. [2020-10-13 09:44:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11228 states to 11228 states and 13170 transitions. [2020-10-13 09:44:55,040 INFO L78 Accepts]: Start accepts. Automaton has 11228 states and 13170 transitions. Word has length 279 [2020-10-13 09:44:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:55,041 INFO L479 AbstractCegarLoop]: Abstraction has 11228 states and 13170 transitions. [2020-10-13 09:44:55,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:44:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 11228 states and 13170 transitions. [2020-10-13 09:44:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-13 09:44:55,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:55,049 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:44:55,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:44:55,049 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:55,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:55,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1414460212, now seen corresponding path program 1 times [2020-10-13 09:44:55,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:55,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894708192] [2020-10-13 09:44:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:58,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:58,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-13 09:44:58,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2940 [2020-10-13 09:44:58,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-13 09:44:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 09:44:58,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:58,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:58,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:58,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:44:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:58,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:58,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:44:58,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:58,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:44:58,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:44:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:44:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:44:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:58,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 09:44:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-13 09:44:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-13 09:44:58,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:44:58,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894708192] [2020-10-13 09:44:58,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:58,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:44:58,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805313973] [2020-10-13 09:44:58,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:44:58,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:58,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:44:58,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:44:58,730 INFO L87 Difference]: Start difference. First operand 11228 states and 13170 transitions. Second operand 5 states. [2020-10-13 09:45:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:16,422 INFO L93 Difference]: Finished difference Result 27772 states and 32948 transitions. [2020-10-13 09:45:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:45:16,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-13 09:45:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:16,480 INFO L225 Difference]: With dead ends: 27772 [2020-10-13 09:45:16,481 INFO L226 Difference]: Without dead ends: 16550 [2020-10-13 09:45:16,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:45:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16550 states. [2020-10-13 09:45:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16550 to 15662. [2020-10-13 09:45:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15662 states. [2020-10-13 09:45:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15662 states to 15662 states and 18500 transitions. [2020-10-13 09:45:16,770 INFO L78 Accepts]: Start accepts. Automaton has 15662 states and 18500 transitions. Word has length 335 [2020-10-13 09:45:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:16,771 INFO L479 AbstractCegarLoop]: Abstraction has 15662 states and 18500 transitions. [2020-10-13 09:45:16,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:45:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 15662 states and 18500 transitions. [2020-10-13 09:45:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-13 09:45:16,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:16,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:45:16,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:45:16,783 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:16,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:16,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1578248607, now seen corresponding path program 1 times [2020-10-13 09:45:16,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:16,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739250225] [2020-10-13 09:45:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:19,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-13 09:45:19,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:45:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3065 [2020-10-13 09:45:19,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 09:45:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:45:19,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 388 [2020-10-13 09:45:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:20,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:20,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:20,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:20,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:45:20,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:45:20,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:20,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-13 09:45:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-13 09:45:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:45:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-13 09:45:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:45:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:21,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:21,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:21,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 09:45:21,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 09:45:21,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:45:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:45:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 09:45:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:45:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:45:22,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739250225] [2020-10-13 09:45:22,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:22,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:45:22,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488036478] [2020-10-13 09:45:22,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:45:22,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:22,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:45:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:45:22,313 INFO L87 Difference]: Start difference. First operand 15662 states and 18500 transitions. Second operand 8 states. [2020-10-13 09:45:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:45:42,235 INFO L93 Difference]: Finished difference Result 36660 states and 43842 transitions. [2020-10-13 09:45:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:45:42,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 385 [2020-10-13 09:45:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:45:42,294 INFO L225 Difference]: With dead ends: 36660 [2020-10-13 09:45:42,294 INFO L226 Difference]: Without dead ends: 20966 [2020-10-13 09:45:42,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:45:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20966 states. [2020-10-13 09:45:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20966 to 20936. [2020-10-13 09:45:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20936 states. [2020-10-13 09:45:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20936 states to 20936 states and 24937 transitions. [2020-10-13 09:45:42,699 INFO L78 Accepts]: Start accepts. Automaton has 20936 states and 24937 transitions. Word has length 385 [2020-10-13 09:45:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:45:42,700 INFO L479 AbstractCegarLoop]: Abstraction has 20936 states and 24937 transitions. [2020-10-13 09:45:42,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:45:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 20936 states and 24937 transitions. [2020-10-13 09:45:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-13 09:45:42,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:45:42,718 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, 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, 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] [2020-10-13 09:45:42,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:45:42,719 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:45:42,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:45:42,719 INFO L82 PathProgramCache]: Analyzing trace with hash 9586273, now seen corresponding path program 1 times [2020-10-13 09:45:42,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:45:42,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472462643] [2020-10-13 09:45:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:45:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:42,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:43,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:44,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:47,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:47,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-13 09:45:47,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:45:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:45:47,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:45:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 382 [2020-10-13 09:45:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:45:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:48,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:45:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:48,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:48,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:45:48,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:45:48,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:48,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:45:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:48,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:48,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:45:48,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:48,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:45:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:48,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:45:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:48,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:48,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:45:48,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:45:48,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:45:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:45:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:45:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:45:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:45:48,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:45:48,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:45:48,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:45:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:45:48,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:45:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:45:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:45:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 09:45:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:45:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:45:48,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472462643] [2020-10-13 09:45:48,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:45:48,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:45:48,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281936097] [2020-10-13 09:45:48,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:45:48,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:45:48,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:45:48,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:45:48,461 INFO L87 Difference]: Start difference. First operand 20936 states and 24937 transitions. Second operand 5 states. [2020-10-13 09:46:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:46:01,371 INFO L93 Difference]: Finished difference Result 41485 states and 49495 transitions. [2020-10-13 09:46:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:46:01,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 406 [2020-10-13 09:46:01,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:46:01,419 INFO L225 Difference]: With dead ends: 41485 [2020-10-13 09:46:01,419 INFO L226 Difference]: Without dead ends: 20936 [2020-10-13 09:46:01,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:46:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20936 states. [2020-10-13 09:46:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20936 to 20936. [2020-10-13 09:46:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20936 states. [2020-10-13 09:46:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20936 states to 20936 states and 24929 transitions. [2020-10-13 09:46:01,744 INFO L78 Accepts]: Start accepts. Automaton has 20936 states and 24929 transitions. Word has length 406 [2020-10-13 09:46:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:46:01,745 INFO L479 AbstractCegarLoop]: Abstraction has 20936 states and 24929 transitions. [2020-10-13 09:46:01,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:46:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 20936 states and 24929 transitions. [2020-10-13 09:46:01,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-13 09:46:01,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:46:01,755 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:46:01,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:46:01,755 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:46:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:46:01,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1525946753, now seen corresponding path program 1 times [2020-10-13 09:46:01,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:46:01,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997957160] [2020-10-13 09:46:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:46:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:04,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:06,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:06,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-13 09:46:06,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:46:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4681 [2020-10-13 09:46:06,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:46:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 387 [2020-10-13 09:46:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:46:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:06,745 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-10-13 09:46:06,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:46:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:06,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:46:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:46:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:46:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:06,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:06,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:46:06,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:06,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:46:06,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:46:06,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:06,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:46:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:46:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:46:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:46:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:46:07,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:46:07,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-13 09:46:07,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:46:07,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 09:46:07,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:46:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:46:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:46:07,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 283 [2020-10-13 09:46:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:46:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:46:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997957160] [2020-10-13 09:46:07,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:46:07,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:46:07,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051507181] [2020-10-13 09:46:07,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:46:07,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:46:07,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:46:07,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:46:07,572 INFO L87 Difference]: Start difference. First operand 20936 states and 24929 transitions. Second operand 5 states.