/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/Problem04_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:36:24,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:36:24,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:36:24,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:36:24,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:36:24,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:36:24,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:36:24,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:36:24,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:36:24,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:36:24,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:36:24,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:36:24,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:36:24,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:36:24,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:36:24,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:36:24,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:36:24,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:36:24,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:36:24,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:36:24,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:36:24,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:36:24,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:36:24,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:36:24,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:36:24,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:36:24,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:36:24,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:36:24,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:36:24,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:36:24,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:36:24,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:36:24,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:36:24,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:36:24,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:36:24,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:36:25,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:36:25,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:36:25,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:36:25,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:36:25,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:36:25,009 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 06:36:25,045 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:36:25,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:36:25,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:36:25,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:36:25,047 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:36:25,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:36:25,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:36:25,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:36:25,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:36:25,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:36:25,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:36:25,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:36:25,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:36:25,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:36:25,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:36:25,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:36:25,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:36:25,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:36:25,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:36:25,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:36:25,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:36:25,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:36:25,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:36:25,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:36:25,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:36:25,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:36:25,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:36:25,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:36:25,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:36:25,053 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 06:36:25,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:36:25,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:36:25,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:36:25,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:36:25,390 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:36:25,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label31.c [2020-10-13 06:36:25,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad95fc67e/c2926b01e461446eb8b666473cc59cee/FLAGca3601adb [2020-10-13 06:36:26,214 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:36:26,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label31.c [2020-10-13 06:36:26,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad95fc67e/c2926b01e461446eb8b666473cc59cee/FLAGca3601adb [2020-10-13 06:36:26,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad95fc67e/c2926b01e461446eb8b666473cc59cee [2020-10-13 06:36:26,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:36:26,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:36:26,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:36:26,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:36:26,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:36:26,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:36:26" (1/1) ... [2020-10-13 06:36:26,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634162df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:26, skipping insertion in model container [2020-10-13 06:36:26,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:36:26" (1/1) ... [2020-10-13 06:36:26,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:36:26,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:36:28,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:36:28,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:36:29,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:36:29,273 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:36:29,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29 WrapperNode [2020-10-13 06:36:29,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:36:29,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:36:29,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:36:29,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:36:29,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (1/1) ... [2020-10-13 06:36:29,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (1/1) ... [2020-10-13 06:36:29,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (1/1) ... [2020-10-13 06:36:29,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (1/1) ... [2020-10-13 06:36:29,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (1/1) ... [2020-10-13 06:36:29,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (1/1) ... [2020-10-13 06:36:29,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (1/1) ... [2020-10-13 06:36:29,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:36:29,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:36:29,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:36:29,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:36:29,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (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 06:36:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:36:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:36:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:36:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:36:29,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:36:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:36:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:36:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:36:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:36:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:36:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:36:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:36:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:36:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:36:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:36:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:36:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:36:33,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:36:33,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:36:33,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:36:33 BoogieIcfgContainer [2020-10-13 06:36:33,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:36:33,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:36:33,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:36:33,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:36:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:36:26" (1/3) ... [2020-10-13 06:36:33,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e0a144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:36:33, skipping insertion in model container [2020-10-13 06:36:33,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:36:29" (2/3) ... [2020-10-13 06:36:33,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e0a144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:36:33, skipping insertion in model container [2020-10-13 06:36:33,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:36:33" (3/3) ... [2020-10-13 06:36:33,690 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label31.c [2020-10-13 06:36:33,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:36:33,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:36:33,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:36:33,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:36:33,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:36:33,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:36:33,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:36:33,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:36:33,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:36:33,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:36:33,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:36:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:36:33,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2020-10-13 06:36:33,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:36:33,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:33,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:36:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:36:33,873 INFO L82 PathProgramCache]: Analyzing trace with hash -807693989, now seen corresponding path program 1 times [2020-10-13 06:36:33,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:36:33,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205079706] [2020-10-13 06:36:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:36:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:39,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 784 [2020-10-13 06:36:39,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:36:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 06:36:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:36:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:36:39,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:36:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:36:41,035 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-13 06:36:41,205 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-13 06:36:41,322 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-13 06:36:41,556 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-13 06:36:42,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:36:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:42,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:42,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:42,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:36:42,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:36:42,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:36:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:42,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:36:42,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:36:46,141 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 06:36:46,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205079706] [2020-10-13 06:36:46,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:36:46,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:36:46,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54199250] [2020-10-13 06:36:46,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:36:46,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:36:46,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:36:46,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:36:46,163 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:36:46,769 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-13 06:36:47,086 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 06:36:47,350 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:36:49,349 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-13 06:36:49,694 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 98 [2020-10-13 06:36:51,527 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-13 06:36:52,618 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-13 06:37:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:01,181 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:37:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:37:01,184 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 770 [2020-10-13 06:37:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:01,254 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:37:01,255 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:37:01,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:37:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:37:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:37:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:37:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:37:01,472 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 770 [2020-10-13 06:37:01,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:01,475 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:37:01,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:37:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:37:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2020-10-13 06:37:01,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:01,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:01,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:37:01,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:01,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:01,525 INFO L82 PathProgramCache]: Analyzing trace with hash 16746796, now seen corresponding path program 1 times [2020-10-13 06:37:01,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:01,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909027921] [2020-10-13 06:37:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:02,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:06,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:06,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-13 06:37:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:37:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-13 06:37:06,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:37:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:37:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 775 [2020-10-13 06:37:06,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:07,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:37:07,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:07,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:07,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:07,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:07,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:37:07,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:37:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:37:08,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909027921] [2020-10-13 06:37:08,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:08,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:37:08,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363460751] [2020-10-13 06:37:08,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:37:08,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:37:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:37:08,088 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 6 states. [2020-10-13 06:37:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:19,464 INFO L93 Difference]: Finished difference Result 4117 states and 7177 transitions. [2020-10-13 06:37:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:37:19,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 789 [2020-10-13 06:37:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:19,482 INFO L225 Difference]: With dead ends: 4117 [2020-10-13 06:37:19,483 INFO L226 Difference]: Without dead ends: 3270 [2020-10-13 06:37:19,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:37:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2020-10-13 06:37:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3270. [2020-10-13 06:37:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3270 states. [2020-10-13 06:37:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4879 transitions. [2020-10-13 06:37:19,569 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4879 transitions. Word has length 789 [2020-10-13 06:37:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:19,570 INFO L479 AbstractCegarLoop]: Abstraction has 3270 states and 4879 transitions. [2020-10-13 06:37:19,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:37:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4879 transitions. [2020-10-13 06:37:19,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-10-13 06:37:19,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:19,586 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:19,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:37:19,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:19,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:19,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1505869102, now seen corresponding path program 1 times [2020-10-13 06:37:19,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:19,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900695808] [2020-10-13 06:37:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:19,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:24,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:24,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 882 [2020-10-13 06:37:24,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:37:24,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:37:24,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:37:24,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:37:24,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:24,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:24,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:37:24,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:24,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:24,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:24,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:24,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:37:24,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:37:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:24,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:37:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:24,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:24,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:37:24,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:37:24,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:37:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:37:24,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 06:37:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:25,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:25,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:25,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:37:25,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:25,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:37:25,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:37:25,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:25,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 99 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 06:37:25,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900695808] [2020-10-13 06:37:25,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:25,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:37:25,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741948183] [2020-10-13 06:37:25,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:37:25,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:37:25,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:37:25,862 INFO L87 Difference]: Start difference. First operand 3270 states and 4879 transitions. Second operand 7 states. [2020-10-13 06:37:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:35,655 INFO L93 Difference]: Finished difference Result 8433 states and 13416 transitions. [2020-10-13 06:37:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:37:35,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 862 [2020-10-13 06:37:35,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:35,697 INFO L225 Difference]: With dead ends: 8433 [2020-10-13 06:37:35,698 INFO L226 Difference]: Without dead ends: 5896 [2020-10-13 06:37:35,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:37:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2020-10-13 06:37:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5865. [2020-10-13 06:37:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5865 states. [2020-10-13 06:37:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 8202 transitions. [2020-10-13 06:37:35,862 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 8202 transitions. Word has length 862 [2020-10-13 06:37:35,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:35,862 INFO L479 AbstractCegarLoop]: Abstraction has 5865 states and 8202 transitions. [2020-10-13 06:37:35,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:37:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 8202 transitions. [2020-10-13 06:37:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2020-10-13 06:37:35,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:35,887 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:35,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:37:35,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1219896403, now seen corresponding path program 1 times [2020-10-13 06:37:35,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:35,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149954347] [2020-10-13 06:37:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:37,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:40,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 934 [2020-10-13 06:37:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:37:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:37:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 06:37:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:37:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:41,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:37:41,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:37:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:41,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:41,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:41,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:41,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:41,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:37:41,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:37:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:41,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 06:37:41,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 06:37:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 06:37:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 06:37:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:41,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:37:41,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:37:41,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:41,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:37:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:37:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 06:37:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:41,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:41,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:37:41,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:37:41,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 06:37:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 06:37:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 167 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 06:37:41,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149954347] [2020-10-13 06:37:41,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:41,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:37:41,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567663960] [2020-10-13 06:37:41,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:37:41,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:41,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:37:41,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:37:41,828 INFO L87 Difference]: Start difference. First operand 5865 states and 8202 transitions. Second operand 7 states. [2020-10-13 06:37:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:56,213 INFO L93 Difference]: Finished difference Result 21305 states and 31233 transitions. [2020-10-13 06:37:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:37:56,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 912 [2020-10-13 06:37:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:56,281 INFO L225 Difference]: With dead ends: 21305 [2020-10-13 06:37:56,282 INFO L226 Difference]: Without dead ends: 16173 [2020-10-13 06:37:56,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:37:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16173 states. [2020-10-13 06:37:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16173 to 15326. [2020-10-13 06:37:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15326 states. [2020-10-13 06:37:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15326 states to 15326 states and 19418 transitions. [2020-10-13 06:37:56,662 INFO L78 Accepts]: Start accepts. Automaton has 15326 states and 19418 transitions. Word has length 912 [2020-10-13 06:37:56,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:56,663 INFO L479 AbstractCegarLoop]: Abstraction has 15326 states and 19418 transitions. [2020-10-13 06:37:56,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:37:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 15326 states and 19418 transitions. [2020-10-13 06:37:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2020-10-13 06:37:56,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:56,706 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:56,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:37:56,710 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:56,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:56,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1209736426, now seen corresponding path program 1 times [2020-10-13 06:37:56,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:56,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211918138] [2020-10-13 06:37:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 990 [2020-10-13 06:38:01,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-13 06:38:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:38:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 06:38:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:02,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:02,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:02,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:02,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:38:02,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:02,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:02,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:02,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:02,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:02,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:38:02,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:38:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:02,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:02,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:02,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 06:38:02,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 06:38:02,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 06:38:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 06:38:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:02,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 06:38:02,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:02,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:38:02,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:02,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 06:38:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 211 proven. 72 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 06:38:02,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211918138] [2020-10-13 06:38:02,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:02,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:02,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463652391] [2020-10-13 06:38:02,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:02,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:02,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:02,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:02,677 INFO L87 Difference]: Start difference. First operand 15326 states and 19418 transitions. Second operand 7 states. [2020-10-13 06:38:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:14,622 INFO L93 Difference]: Finished difference Result 43787 states and 57802 transitions. [2020-10-13 06:38:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:38:14,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 970 [2020-10-13 06:38:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:14,743 INFO L225 Difference]: With dead ends: 43787 [2020-10-13 06:38:14,744 INFO L226 Difference]: Without dead ends: 29194 [2020-10-13 06:38:14,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:38:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29194 states. [2020-10-13 06:38:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29194 to 27395. [2020-10-13 06:38:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27395 states. [2020-10-13 06:38:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27395 states to 27395 states and 35182 transitions. [2020-10-13 06:38:16,255 INFO L78 Accepts]: Start accepts. Automaton has 27395 states and 35182 transitions. Word has length 970 [2020-10-13 06:38:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:16,256 INFO L479 AbstractCegarLoop]: Abstraction has 27395 states and 35182 transitions. [2020-10-13 06:38:16,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:38:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 27395 states and 35182 transitions. [2020-10-13 06:38:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-13 06:38:16,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:16,311 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:16,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:38:16,312 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash 339096702, now seen corresponding path program 1 times [2020-10-13 06:38:16,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:16,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628025218] [2020-10-13 06:38:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 991 [2020-10-13 06:38:21,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 06:38:21,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:38:21,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 06:38:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:21,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:21,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:21,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:38:21,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:38:21,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 06:38:21,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:38:21,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:21,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 06:38:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 06:38:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 06:38:21,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:38:21,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 06:38:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 212 proven. 73 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 06:38:22,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628025218] [2020-10-13 06:38:22,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:22,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:22,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318069794] [2020-10-13 06:38:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:22,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:22,343 INFO L87 Difference]: Start difference. First operand 27395 states and 35182 transitions. Second operand 7 states. [2020-10-13 06:38:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:31,813 INFO L93 Difference]: Finished difference Result 75275 states and 99314 transitions. [2020-10-13 06:38:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 06:38:31,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 971 [2020-10-13 06:38:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:31,972 INFO L225 Difference]: With dead ends: 75275 [2020-10-13 06:38:31,972 INFO L226 Difference]: Without dead ends: 48613 [2020-10-13 06:38:32,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:38:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48613 states. [2020-10-13 06:38:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48613 to 46925. [2020-10-13 06:38:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46925 states. [2020-10-13 06:38:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46925 states to 46925 states and 61134 transitions. [2020-10-13 06:38:32,982 INFO L78 Accepts]: Start accepts. Automaton has 46925 states and 61134 transitions. Word has length 971 [2020-10-13 06:38:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:32,982 INFO L479 AbstractCegarLoop]: Abstraction has 46925 states and 61134 transitions. [2020-10-13 06:38:32,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:38:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 46925 states and 61134 transitions. [2020-10-13 06:38:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-13 06:38:33,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:33,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:33,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:38:33,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:33,062 INFO L82 PathProgramCache]: Analyzing trace with hash 946779096, now seen corresponding path program 1 times [2020-10-13 06:38:33,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:33,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227455352] [2020-10-13 06:38:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:38,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 06:38:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:38,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:38,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:38,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:38,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:38:38,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:38,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:38,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:38,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:38,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:38:38,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:38,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:38:38,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:38:38,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:38:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:38,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:38,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 06:38:38,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:38:38,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 06:38:38,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:38:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:38,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:38,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 06:38:38,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 06:38:38,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 06:38:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 226 proven. 73 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-13 06:38:39,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227455352] [2020-10-13 06:38:39,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:39,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:39,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737269900] [2020-10-13 06:38:39,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:39,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:39,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:39,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:39,013 INFO L87 Difference]: Start difference. First operand 46925 states and 61134 transitions. Second operand 7 states. [2020-10-13 06:38:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:49,682 INFO L93 Difference]: Finished difference Result 125316 states and 167617 transitions. [2020-10-13 06:38:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:38:49,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 978 [2020-10-13 06:38:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:49,935 INFO L225 Difference]: With dead ends: 125316 [2020-10-13 06:38:49,936 INFO L226 Difference]: Without dead ends: 79124 [2020-10-13 06:38:50,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:38:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79124 states. [2020-10-13 06:38:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79124 to 73906. [2020-10-13 06:38:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73906 states. [2020-10-13 06:38:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73906 states to 73906 states and 95454 transitions. [2020-10-13 06:38:51,354 INFO L78 Accepts]: Start accepts. Automaton has 73906 states and 95454 transitions. Word has length 978 [2020-10-13 06:38:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:51,355 INFO L479 AbstractCegarLoop]: Abstraction has 73906 states and 95454 transitions. [2020-10-13 06:38:51,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:38:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 73906 states and 95454 transitions. [2020-10-13 06:38:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2020-10-13 06:38:51,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:51,450 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:51,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:38:51,450 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:51,451 INFO L82 PathProgramCache]: Analyzing trace with hash 25036004, now seen corresponding path program 1 times [2020-10-13 06:38:51,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:51,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80647637] [2020-10-13 06:38:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:56,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:56,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1347 [2020-10-13 06:38:56,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:38:56,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 06:38:56,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:38:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 06:38:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:56,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:56,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:56,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:38:56,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:56,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:56,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:56,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:56,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:38:56,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:56,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:56,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 06:38:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:38:56,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 06:38:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:56,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:38:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:56,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:57,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:57,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 06:38:57,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 06:38:57,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 06:38:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-13 06:38:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:57,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:57,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:57,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 06:38:57,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:38:57,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-13 06:38:57,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:57,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-13 06:38:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:57,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:38:57,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:38:57,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-13 06:38:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 680 proven. 212 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2020-10-13 06:38:58,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80647637] [2020-10-13 06:38:58,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:58,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:58,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943224157] [2020-10-13 06:38:58,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:58,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:58,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:58,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:58,094 INFO L87 Difference]: Start difference. First operand 73906 states and 95454 transitions. Second operand 7 states. [2020-10-13 06:39:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:09,234 INFO L93 Difference]: Finished difference Result 167382 states and 219117 transitions. [2020-10-13 06:39:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:39:09,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1323 [2020-10-13 06:39:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:09,533 INFO L225 Difference]: With dead ends: 167382 [2020-10-13 06:39:09,534 INFO L226 Difference]: Without dead ends: 94209 [2020-10-13 06:39:09,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:39:09,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94209 states. [2020-10-13 06:39:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94209 to 92454. [2020-10-13 06:39:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92454 states. [2020-10-13 06:39:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92454 states to 92454 states and 117854 transitions. [2020-10-13 06:39:11,112 INFO L78 Accepts]: Start accepts. Automaton has 92454 states and 117854 transitions. Word has length 1323 [2020-10-13 06:39:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:11,113 INFO L479 AbstractCegarLoop]: Abstraction has 92454 states and 117854 transitions. [2020-10-13 06:39:11,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:39:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 92454 states and 117854 transitions. [2020-10-13 06:39:11,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1440 [2020-10-13 06:39:11,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:11,675 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:11,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:39:11,676 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:11,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:11,677 INFO L82 PathProgramCache]: Analyzing trace with hash -890457149, now seen corresponding path program 1 times [2020-10-13 06:39:11,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:11,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349828204] [2020-10-13 06:39:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:14,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:16,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:16,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1463 [2020-10-13 06:39:16,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:39:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:39:16,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 545 [2020-10-13 06:39:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-13 06:39:16,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:17,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:39:17,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-13 06:39:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:39:17,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 06:39:17,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:39:17,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:17,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-10-13 06:39:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 06:39:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 06:39:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 06:39:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-13 06:39:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:17,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:17,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:39:17,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:17,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 06:39:17,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:39:17,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 954 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 06:39:18,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349828204] [2020-10-13 06:39:18,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:18,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:18,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777970395] [2020-10-13 06:39:18,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:18,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:18,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:18,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:18,600 INFO L87 Difference]: Start difference. First operand 92454 states and 117854 transitions. Second operand 7 states. [2020-10-13 06:39:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:29,375 INFO L93 Difference]: Finished difference Result 185378 states and 238472 transitions. [2020-10-13 06:39:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:39:29,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1439 [2020-10-13 06:39:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:29,565 INFO L225 Difference]: With dead ends: 185378 [2020-10-13 06:39:29,565 INFO L226 Difference]: Without dead ends: 92789 [2020-10-13 06:39:29,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:39:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92789 states. [2020-10-13 06:39:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92789 to 89239. [2020-10-13 06:39:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89239 states. [2020-10-13 06:39:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89239 states to 89239 states and 105876 transitions. [2020-10-13 06:39:31,228 INFO L78 Accepts]: Start accepts. Automaton has 89239 states and 105876 transitions. Word has length 1439 [2020-10-13 06:39:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:31,230 INFO L479 AbstractCegarLoop]: Abstraction has 89239 states and 105876 transitions. [2020-10-13 06:39:31,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:39:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 89239 states and 105876 transitions. [2020-10-13 06:39:31,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1478 [2020-10-13 06:39:31,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:31,380 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:31,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:39:31,381 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1388734829, now seen corresponding path program 1 times [2020-10-13 06:39:31,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:31,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383423612] [2020-10-13 06:39:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:31,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:36,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:36,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1503 [2020-10-13 06:39:36,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:39:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 06:39:36,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:39:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:39:36,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-13 06:39:36,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:36,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:39:36,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:39:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:37,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:37,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 06:39:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-13 06:39:37,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:39:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-13 06:39:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:37,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:37,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:39:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:39:37,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:39:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:37,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:39:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:37,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-13 06:39:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:37,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:37,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 06:39:37,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:39:37,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 06:39:37,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:37,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-13 06:39:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:37,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:37,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:37,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:37,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 06:39:37,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 06:39:37,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 713 proven. 303 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-13 06:39:38,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383423612] [2020-10-13 06:39:38,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:38,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:39:38,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127928756] [2020-10-13 06:39:38,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:39:38,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:38,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:39:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:39:38,750 INFO L87 Difference]: Start difference. First operand 89239 states and 105876 transitions. Second operand 8 states. [2020-10-13 06:39:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:54,178 INFO L93 Difference]: Finished difference Result 189881 states and 225968 transitions. [2020-10-13 06:39:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:39:54,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1477 [2020-10-13 06:39:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:39:54,367 INFO L225 Difference]: With dead ends: 189881 [2020-10-13 06:39:54,368 INFO L226 Difference]: Without dead ends: 100533 [2020-10-13 06:39:54,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:39:54,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100533 states. [2020-10-13 06:39:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100533 to 97931. [2020-10-13 06:39:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97931 states. [2020-10-13 06:39:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97931 states to 97931 states and 112009 transitions. [2020-10-13 06:39:55,700 INFO L78 Accepts]: Start accepts. Automaton has 97931 states and 112009 transitions. Word has length 1477 [2020-10-13 06:39:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:39:55,701 INFO L479 AbstractCegarLoop]: Abstraction has 97931 states and 112009 transitions. [2020-10-13 06:39:55,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:39:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 97931 states and 112009 transitions. [2020-10-13 06:39:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1485 [2020-10-13 06:39:55,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:39:55,803 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:55,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:39:55,804 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:39:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:39:55,804 INFO L82 PathProgramCache]: Analyzing trace with hash 27358279, now seen corresponding path program 1 times [2020-10-13 06:39:55,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:39:55,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007664428] [2020-10-13 06:39:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:39:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:56,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:56,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking...