/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_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:26:38,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:26:38,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:26:38,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:26:38,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:26:38,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:26:38,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:26:38,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:26:38,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:26:38,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:26:38,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:26:38,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:26:38,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:26:38,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:26:38,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:26:38,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:26:38,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:26:38,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:26:38,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:26:38,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:26:38,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:26:38,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:26:38,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:26:38,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:26:38,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:26:38,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:26:38,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:26:38,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:26:38,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:26:38,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:26:38,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:26:38,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:26:38,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:26:38,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:26:38,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:26:38,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:26:38,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:26:38,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:26:38,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:26:38,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:26:38,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:26:38,717 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 09:26:38,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:26:38,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:26:38,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:26:38,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:26:38,743 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:26:38,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:26:38,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:26:38,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:26:38,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:26:38,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:26:38,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:26:38,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:26:38,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:26:38,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:26:38,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:26:38,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:26:38,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:26:38,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:26:38,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:26:38,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:26:38,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:26:38,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:26:38,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:26:38,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:26:38,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:26:38,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:26:38,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:26:38,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:26:38,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:26:38,748 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 09:26:39,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:26:39,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:26:39,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:26:39,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:26:39,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:26:39,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-13 09:26:39,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e764202/712ca60cf9c04080ada18ce114e1cc69/FLAG6b3c8a772 [2020-10-13 09:26:39,939 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:26:39,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2020-10-13 09:26:39,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e764202/712ca60cf9c04080ada18ce114e1cc69/FLAG6b3c8a772 [2020-10-13 09:26:39,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e764202/712ca60cf9c04080ada18ce114e1cc69 [2020-10-13 09:26:40,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:26:40,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:26:40,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:26:40,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:26:40,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:26:40,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:26:39" (1/1) ... [2020-10-13 09:26:40,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2a8928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:40, skipping insertion in model container [2020-10-13 09:26:40,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:26:39" (1/1) ... [2020-10-13 09:26:40,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:26:40,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:26:41,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:26:41,368 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:26:41,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:26:41,912 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:26:41,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41 WrapperNode [2020-10-13 09:26:41,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:26:41,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:26:41,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:26:41,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:26:41,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (1/1) ... [2020-10-13 09:26:41,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (1/1) ... [2020-10-13 09:26:41,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (1/1) ... [2020-10-13 09:26:41,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (1/1) ... [2020-10-13 09:26:42,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (1/1) ... [2020-10-13 09:26:42,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (1/1) ... [2020-10-13 09:26:42,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (1/1) ... [2020-10-13 09:26:42,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:26:42,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:26:42,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:26:42,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:26:42,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (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 09:26:42,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:26:42,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:26:42,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:26:42,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:26:42,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:26:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:26:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:26:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:26:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:26:42,262 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:26:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:26:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:26:42,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:26:50,852 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:26:50,852 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:26:50,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:50 BoogieIcfgContainer [2020-10-13 09:26:50,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:26:50,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:26:50,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:26:50,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:26:50,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:26:39" (1/3) ... [2020-10-13 09:26:50,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b46ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:50, skipping insertion in model container [2020-10-13 09:26:50,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:41" (2/3) ... [2020-10-13 09:26:50,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b46ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:50, skipping insertion in model container [2020-10-13 09:26:50,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:50" (3/3) ... [2020-10-13 09:26:50,871 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label04.c [2020-10-13 09:26:50,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:26:50,894 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:26:50,908 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:26:50,936 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:26:50,936 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:26:50,936 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:26:50,936 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:26:50,937 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:26:50,937 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:26:50,937 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:26:50,937 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:26:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:26:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 09:26:50,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:50,987 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] [2020-10-13 09:26:50,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:50,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1223613225, now seen corresponding path program 1 times [2020-10-13 09:26:51,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:51,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266619140] [2020-10-13 09:26:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 09:26:51,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-13 09:26:51,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:26:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:26:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 09:26:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:26:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:51,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:26:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:26:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,768 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 09:26:51,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266619140] [2020-10-13 09:26:51,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:26:51,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:26:51,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173602825] [2020-10-13 09:26:51,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:26:51,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:51,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:26:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:26:51,799 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:27:01,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:01,159 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-13 09:27:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:01,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-13 09:27:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:01,189 INFO L225 Difference]: With dead ends: 1689 [2020-10-13 09:27:01,189 INFO L226 Difference]: Without dead ends: 1009 [2020-10-13 09:27:01,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-13 09:27:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-13 09:27:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-13 09:27:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-13 09:27:01,408 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 26 [2020-10-13 09:27:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:01,408 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-13 09:27:01,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:27:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-13 09:27:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 09:27:01,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:01,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:27:01,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:27:01,418 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash -255135052, now seen corresponding path program 1 times [2020-10-13 09:27:01,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:01,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135340799] [2020-10-13 09:27:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:02,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:27:02,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:27:02,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-13 09:27:02,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:27:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:27:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:27:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:27:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:02,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:02,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:27:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 09:27:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:27:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:27:02,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135340799] [2020-10-13 09:27:02,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:02,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:02,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678986212] [2020-10-13 09:27:02,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:02,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:02,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:02,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:02,926 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-13 09:27:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:17,110 INFO L93 Difference]: Finished difference Result 2899 states and 4501 transitions. [2020-10-13 09:27:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:17,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 09:27:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:17,124 INFO L225 Difference]: With dead ends: 2899 [2020-10-13 09:27:17,124 INFO L226 Difference]: Without dead ends: 1914 [2020-10-13 09:27:17,129 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 09:27:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-13 09:27:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1889. [2020-10-13 09:27:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2020-10-13 09:27:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2683 transitions. [2020-10-13 09:27:17,199 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2683 transitions. Word has length 97 [2020-10-13 09:27:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:17,200 INFO L479 AbstractCegarLoop]: Abstraction has 1889 states and 2683 transitions. [2020-10-13 09:27:17,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2683 transitions. [2020-10-13 09:27:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 09:27:17,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:17,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:27:17,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:27:17,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:17,210 INFO L82 PathProgramCache]: Analyzing trace with hash -414121280, now seen corresponding path program 1 times [2020-10-13 09:27:17,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:17,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912992957] [2020-10-13 09:27:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:17,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:17,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:27:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-13 09:27:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:27:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:27:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:27:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:17,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:27:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:17,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:17,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:17,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:27:17,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:27:17,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:27:17,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:27:17,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912992957] [2020-10-13 09:27:17,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:17,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:17,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216456711] [2020-10-13 09:27:17,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:17,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:17,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:17,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:17,873 INFO L87 Difference]: Start difference. First operand 1889 states and 2683 transitions. Second operand 5 states. [2020-10-13 09:27:32,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:32,937 INFO L93 Difference]: Finished difference Result 3780 states and 5764 transitions. [2020-10-13 09:27:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:32,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 09:27:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:32,959 INFO L225 Difference]: With dead ends: 3780 [2020-10-13 09:27:32,959 INFO L226 Difference]: Without dead ends: 2789 [2020-10-13 09:27:32,963 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 09:27:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2020-10-13 09:27:33,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2783. [2020-10-13 09:27:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2783 states. [2020-10-13 09:27:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3795 transitions. [2020-10-13 09:27:33,042 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3795 transitions. Word has length 100 [2020-10-13 09:27:33,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:33,043 INFO L479 AbstractCegarLoop]: Abstraction has 2783 states and 3795 transitions. [2020-10-13 09:27:33,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3795 transitions. [2020-10-13 09:27:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 09:27:33,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:33,045 INFO L422 BasicCegarLoop]: trace histogram [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 09:27:33,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:27:33,046 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash 2013961148, now seen corresponding path program 1 times [2020-10-13 09:27:33,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:33,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344150624] [2020-10-13 09:27:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:34,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:34,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:27:34,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:27:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 970 [2020-10-13 09:27:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:27:34,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:27:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:34,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:34,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:34,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:27:34,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:34,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:34,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:27:34,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:34,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:27:34,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:34,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:34,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:34,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:27:34,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:27:34,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344150624] [2020-10-13 09:27:34,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:34,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:34,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451021789] [2020-10-13 09:27:34,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:34,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:34,345 INFO L87 Difference]: Start difference. First operand 2783 states and 3795 transitions. Second operand 5 states. [2020-10-13 09:27:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:55,595 INFO L93 Difference]: Finished difference Result 6482 states and 9158 transitions. [2020-10-13 09:27:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:55,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 09:27:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:55,622 INFO L225 Difference]: With dead ends: 6482 [2020-10-13 09:27:55,623 INFO L226 Difference]: Without dead ends: 4597 [2020-10-13 09:27:55,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 09:27:55,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2020-10-13 09:27:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4555. [2020-10-13 09:27:55,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4555 states. [2020-10-13 09:27:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 6248 transitions. [2020-10-13 09:27:55,748 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 6248 transitions. Word has length 102 [2020-10-13 09:27:55,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:55,749 INFO L479 AbstractCegarLoop]: Abstraction has 4555 states and 6248 transitions. [2020-10-13 09:27:55,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 6248 transitions. [2020-10-13 09:27:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 09:27:55,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:55,751 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:27:55,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:27:55,751 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:55,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:55,752 INFO L82 PathProgramCache]: Analyzing trace with hash 426248356, now seen corresponding path program 1 times [2020-10-13 09:27:55,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:55,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187186881] [2020-10-13 09:27:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 09:27:56,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:27:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 865 [2020-10-13 09:27:56,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:27:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:27:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:56,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:56,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:56,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:56,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:27:56,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:56,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:56,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:56,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:27:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:27:56,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:27:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:27:57,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187186881] [2020-10-13 09:27:57,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:57,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:57,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501771913] [2020-10-13 09:27:57,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:57,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:57,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:57,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:57,023 INFO L87 Difference]: Start difference. First operand 4555 states and 6248 transitions. Second operand 5 states. [2020-10-13 09:28:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:10,218 INFO L93 Difference]: Finished difference Result 10005 states and 14332 transitions. [2020-10-13 09:28:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:28:10,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 09:28:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:10,258 INFO L225 Difference]: With dead ends: 10005 [2020-10-13 09:28:10,259 INFO L226 Difference]: Without dead ends: 6348 [2020-10-13 09:28:10,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 09:28:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2020-10-13 09:28:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6334. [2020-10-13 09:28:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6334 states. [2020-10-13 09:28:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6334 states to 6334 states and 8625 transitions. [2020-10-13 09:28:10,461 INFO L78 Accepts]: Start accepts. Automaton has 6334 states and 8625 transitions. Word has length 105 [2020-10-13 09:28:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:10,462 INFO L479 AbstractCegarLoop]: Abstraction has 6334 states and 8625 transitions. [2020-10-13 09:28:10,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:28:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6334 states and 8625 transitions. [2020-10-13 09:28:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 09:28:10,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:10,465 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:28:10,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:28:10,465 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2143934695, now seen corresponding path program 1 times [2020-10-13 09:28:10,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:10,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853041047] [2020-10-13 09:28:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:10,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 09:28:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:28:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-13 09:28:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:28:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:28:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:11,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:11,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:11,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:11,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:11,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:28:11,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:11,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:11,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:11,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:11,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:11,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:11,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:11,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:28:11,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:28:11,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:11,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:28:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:12,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853041047] [2020-10-13 09:28:12,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:12,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:28:12,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799921661] [2020-10-13 09:28:12,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:28:12,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:28:12,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:28:12,032 INFO L87 Difference]: Start difference. First operand 6334 states and 8625 transitions. Second operand 6 states. [2020-10-13 09:28:35,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:35,975 INFO L93 Difference]: Finished difference Result 23599 states and 33369 transitions. [2020-10-13 09:28:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:28:35,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-13 09:28:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:36,067 INFO L225 Difference]: With dead ends: 23599 [2020-10-13 09:28:36,067 INFO L226 Difference]: Without dead ends: 17271 [2020-10-13 09:28:36,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:28:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17271 states. [2020-10-13 09:28:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17271 to 14667. [2020-10-13 09:28:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14667 states. [2020-10-13 09:28:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14667 states to 14667 states and 19689 transitions. [2020-10-13 09:28:36,584 INFO L78 Accepts]: Start accepts. Automaton has 14667 states and 19689 transitions. Word has length 116 [2020-10-13 09:28:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:36,584 INFO L479 AbstractCegarLoop]: Abstraction has 14667 states and 19689 transitions. [2020-10-13 09:28:36,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:28:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 14667 states and 19689 transitions. [2020-10-13 09:28:36,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 09:28:36,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:36,591 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:28:36,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:28:36,592 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:36,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:36,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1323691667, now seen corresponding path program 1 times [2020-10-13 09:28:36,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:36,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665748599] [2020-10-13 09:28:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:37,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:37,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:28:37,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:28:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-10-13 09:28:37,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:28:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:28:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:37,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:28:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:37,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:37,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:37,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:38,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:38,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:28:38,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:38,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:28:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:28:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:28:38,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665748599] [2020-10-13 09:28:38,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:38,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:28:38,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161825873] [2020-10-13 09:28:38,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:28:38,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:38,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:28:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:38,155 INFO L87 Difference]: Start difference. First operand 14667 states and 19689 transitions. Second operand 5 states. [2020-10-13 09:29:04,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:04,088 INFO L93 Difference]: Finished difference Result 39891 states and 54275 transitions. [2020-10-13 09:29:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:04,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 09:29:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:04,234 INFO L225 Difference]: With dead ends: 39891 [2020-10-13 09:29:04,235 INFO L226 Difference]: Without dead ends: 26995 [2020-10-13 09:29:04,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 09:29:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26995 states. [2020-10-13 09:29:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26995 to 26079. [2020-10-13 09:29:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26079 states. [2020-10-13 09:29:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26079 states to 26079 states and 34730 transitions. [2020-10-13 09:29:05,256 INFO L78 Accepts]: Start accepts. Automaton has 26079 states and 34730 transitions. Word has length 129 [2020-10-13 09:29:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:05,257 INFO L479 AbstractCegarLoop]: Abstraction has 26079 states and 34730 transitions. [2020-10-13 09:29:05,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 26079 states and 34730 transitions. [2020-10-13 09:29:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 09:29:05,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:05,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:29:05,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:29:05,265 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:05,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1029453503, now seen corresponding path program 1 times [2020-10-13 09:29:05,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:05,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499163359] [2020-10-13 09:29:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:05,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:10,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:29:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:29:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 09:29:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-13 09:29:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:29:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:10,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:10,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:10,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:10,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:29:10,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:10,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:29:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:29:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 09:29:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:10,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:10,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:29:10,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:29:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:29:10,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:29:10,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499163359] [2020-10-13 09:29:10,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:10,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:29:10,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857384048] [2020-10-13 09:29:10,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:29:10,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:10,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:29:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:29:10,816 INFO L87 Difference]: Start difference. First operand 26079 states and 34730 transitions. Second operand 5 states. [2020-10-13 09:29:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:31,378 INFO L93 Difference]: Finished difference Result 50407 states and 67297 transitions. [2020-10-13 09:29:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:29:31,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-13 09:29:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:31,498 INFO L225 Difference]: With dead ends: 50407 [2020-10-13 09:29:31,498 INFO L226 Difference]: Without dead ends: 26083 [2020-10-13 09:29:31,570 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 09:29:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26083 states. [2020-10-13 09:29:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26083 to 26079. [2020-10-13 09:29:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26079 states. [2020-10-13 09:29:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26079 states to 26079 states and 34705 transitions. [2020-10-13 09:29:32,233 INFO L78 Accepts]: Start accepts. Automaton has 26079 states and 34705 transitions. Word has length 172 [2020-10-13 09:29:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:32,234 INFO L479 AbstractCegarLoop]: Abstraction has 26079 states and 34705 transitions. [2020-10-13 09:29:32,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:29:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 26079 states and 34705 transitions. [2020-10-13 09:29:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:29:32,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:32,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:29:32,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:29:32,242 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:32,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1837493871, now seen corresponding path program 1 times [2020-10-13 09:29:32,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:32,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975028472] [2020-10-13 09:29:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:32,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:33,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:33,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:29:33,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:29:33,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-10-13 09:29:33,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:29:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:29:33,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 09:29:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:33,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:33,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:33,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:33,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:29:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:29:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:29:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:34,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:29:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-13 09:29:34,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:34,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:29:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 09:29:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:29:34,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975028472] [2020-10-13 09:29:34,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:29:34,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 09:29:34,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6615493] [2020-10-13 09:29:34,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:29:34,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:34,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:29:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:29:34,831 INFO L87 Difference]: Start difference. First operand 26079 states and 34705 transitions. Second operand 8 states. [2020-10-13 09:29:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:59,101 INFO L93 Difference]: Finished difference Result 43013 states and 58575 transitions. [2020-10-13 09:29:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:29:59,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-10-13 09:29:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:59,140 INFO L225 Difference]: With dead ends: 43013 [2020-10-13 09:29:59,141 INFO L226 Difference]: Without dead ends: 10775 [2020-10-13 09:29:59,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:29:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2020-10-13 09:29:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 10326. [2020-10-13 09:29:59,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10326 states. [2020-10-13 09:29:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10326 states to 10326 states and 11987 transitions. [2020-10-13 09:29:59,426 INFO L78 Accepts]: Start accepts. Automaton has 10326 states and 11987 transitions. Word has length 180 [2020-10-13 09:29:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:59,427 INFO L479 AbstractCegarLoop]: Abstraction has 10326 states and 11987 transitions. [2020-10-13 09:29:59,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:29:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10326 states and 11987 transitions. [2020-10-13 09:29:59,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-13 09:29:59,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:59,438 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:29:59,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:29:59,439 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash 577134117, now seen corresponding path program 1 times [2020-10-13 09:29:59,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:59,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955171813] [2020-10-13 09:29:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:04,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:30:04,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:30:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:30:04,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-13 09:30:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:30:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:04,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:04,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:30:04,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:04,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:04,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:30:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:04,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:04,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:04,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:30:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:30:04,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:04,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:04,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:30:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:05,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:30:05,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:30:05,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:30:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 09:30:05,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955171813] [2020-10-13 09:30:05,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:05,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:30:05,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212087306] [2020-10-13 09:30:05,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:30:05,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:30:05,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:30:05,285 INFO L87 Difference]: Start difference. First operand 10326 states and 11987 transitions. Second operand 5 states. [2020-10-13 09:30:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:23,556 INFO L93 Difference]: Finished difference Result 23721 states and 27940 transitions. [2020-10-13 09:30:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:30:23,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2020-10-13 09:30:23,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:23,594 INFO L225 Difference]: With dead ends: 23721 [2020-10-13 09:30:23,594 INFO L226 Difference]: Without dead ends: 13401 [2020-10-13 09:30:23,607 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 09:30:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13401 states. [2020-10-13 09:30:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13401 to 12955. [2020-10-13 09:30:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12955 states. [2020-10-13 09:30:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12955 states to 12955 states and 15058 transitions. [2020-10-13 09:30:23,826 INFO L78 Accepts]: Start accepts. Automaton has 12955 states and 15058 transitions. Word has length 284 [2020-10-13 09:30:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:23,827 INFO L479 AbstractCegarLoop]: Abstraction has 12955 states and 15058 transitions. [2020-10-13 09:30:23,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:30:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 12955 states and 15058 transitions. [2020-10-13 09:30:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 09:30:23,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:23,835 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:30:23,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:30:23,835 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:23,837 INFO L82 PathProgramCache]: Analyzing trace with hash 512578231, now seen corresponding path program 1 times [2020-10-13 09:30:23,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:23,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685517025] [2020-10-13 09:30:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:24,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:26,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:26,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 09:30:26,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:30:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2380 [2020-10-13 09:30:26,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-13 09:30:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:30:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:26,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:26,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:26,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:26,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:30:26,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:30:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:26,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:26,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:30:26,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:30:26,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:30:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:26,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:30:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:30:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:26,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:26,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:30:26,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:26,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:30:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:30:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:30:26,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:30:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:26,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:26,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:30:26,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:26,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 09:30:26,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:30:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:30:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 09:30:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 09:30:27,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685517025] [2020-10-13 09:30:27,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:30:27,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:30:27,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367595226] [2020-10-13 09:30:27,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:30:27,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:27,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:30:27,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:30:27,058 INFO L87 Difference]: Start difference. First operand 12955 states and 15058 transitions. Second operand 7 states.