/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/Problem12_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:15:47,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:15:47,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:15:47,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:15:47,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:15:47,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:15:47,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:15:47,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:15:47,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:15:47,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:15:47,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:15:47,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:15:47,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:15:47,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:15:47,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:15:47,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:15:47,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:15:47,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:15:47,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:15:47,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:15:47,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:15:47,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:15:47,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:15:47,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:15:47,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:15:47,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:15:47,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:15:47,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:15:47,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:15:47,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:15:47,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:15:47,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:15:47,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:15:47,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:15:47,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:15:47,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:15:47,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:15:47,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:15:47,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:15:47,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:15:47,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:15:47,486 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 08:15:47,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:15:47,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:15:47,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:15:47,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:15:47,518 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:15:47,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:15:47,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:15:47,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:15:47,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:15:47,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:15:47,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:15:47,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:15:47,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:15:47,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:15:47,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:15:47,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:15:47,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:15:47,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:15:47,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:15:47,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:15:47,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:15:47,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:15:47,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:15:47,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:15:47,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:15:47,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:15:47,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:15:47,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:15:47,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:15:47,523 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 08:15:47,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:15:47,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:15:47,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:15:47,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:15:47,890 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:15:47,891 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-13 08:15:47,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732eb89fc/e63d03312781464caa847f15e47a96e2/FLAG9638e5be8 [2020-10-13 08:15:48,640 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:15:48,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label11.c [2020-10-13 08:15:48,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732eb89fc/e63d03312781464caa847f15e47a96e2/FLAG9638e5be8 [2020-10-13 08:15:48,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/732eb89fc/e63d03312781464caa847f15e47a96e2 [2020-10-13 08:15:48,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:15:48,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:15:48,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:15:48,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:15:48,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:15:48,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:48" (1/1) ... [2020-10-13 08:15:48,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:48, skipping insertion in model container [2020-10-13 08:15:48,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:15:48" (1/1) ... [2020-10-13 08:15:48,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:15:48,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:15:50,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:15:50,708 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:15:51,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:15:51,456 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:15:51,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51 WrapperNode [2020-10-13 08:15:51,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:15:51,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:15:51,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:15:51,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:15:51,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (1/1) ... [2020-10-13 08:15:51,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (1/1) ... [2020-10-13 08:15:51,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (1/1) ... [2020-10-13 08:15:51,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (1/1) ... [2020-10-13 08:15:51,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (1/1) ... [2020-10-13 08:15:51,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (1/1) ... [2020-10-13 08:15:51,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (1/1) ... [2020-10-13 08:15:51,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:15:51,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:15:51,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:15:51,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:15:51,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (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 08:15:51,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:15:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:15:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:15:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:15:51,813 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:15:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:15:51,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:15:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:15:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:15:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:15:51,814 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:15:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:15:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:15:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:15:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:15:51,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:15:51,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:15:56,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:15:56,633 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:15:56,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:56 BoogieIcfgContainer [2020-10-13 08:15:56,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:15:56,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:15:56,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:15:56,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:15:56,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:15:48" (1/3) ... [2020-10-13 08:15:56,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c813b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:56, skipping insertion in model container [2020-10-13 08:15:56,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:15:51" (2/3) ... [2020-10-13 08:15:56,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c813b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:15:56, skipping insertion in model container [2020-10-13 08:15:56,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:15:56" (3/3) ... [2020-10-13 08:15:56,658 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label11.c [2020-10-13 08:15:56,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:15:56,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:15:56,695 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:15:56,727 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:15:56,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:15:56,728 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:15:56,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:15:56,728 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:15:56,728 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:15:56,728 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:15:56,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:15:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:15:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 08:15:56,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:15:56,778 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] [2020-10-13 08:15:56,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:15:56,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:15:56,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1822047914, now seen corresponding path program 1 times [2020-10-13 08:15:56,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:15:56,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491863650] [2020-10-13 08:15:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:15:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:57,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:57,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 08:15:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-13 08:15:57,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:15:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:15:57,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 08:15:57,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:15:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:15:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:15:57,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:15:57,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:15:57,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:15:57,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:15:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:15:57,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:15:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:15:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:15:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:15:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:15:57,536 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 08:15:57,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491863650] [2020-10-13 08:15:57,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:15:57,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:15:57,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565129220] [2020-10-13 08:15:57,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:15:57,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:15:57,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:15:57,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:15:57,565 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-13 08:16:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:06,221 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:16:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:06,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-13 08:16:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:06,255 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:16:06,255 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:16:06,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:16:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:16:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:16:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-13 08:16:06,428 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 45 [2020-10-13 08:16:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:06,429 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-13 08:16:06,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-13 08:16:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 08:16:06,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:06,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:06,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:16:06,436 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:06,437 INFO L82 PathProgramCache]: Analyzing trace with hash 99143583, now seen corresponding path program 1 times [2020-10-13 08:16:06,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:06,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217956979] [2020-10-13 08:16:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:06,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:07,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:07,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 08:16:07,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:16:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-13 08:16:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:16:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 08:16:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:16:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:07,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:07,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:16:07,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:16:07,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:16:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:16:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:07,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217956979] [2020-10-13 08:16:07,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:07,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:07,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641100257] [2020-10-13 08:16:07,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:07,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:07,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:07,953 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 5 states. [2020-10-13 08:16:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:16,055 INFO L93 Difference]: Finished difference Result 4676 states and 8590 transitions. [2020-10-13 08:16:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:16,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 08:16:16,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:16,078 INFO L225 Difference]: With dead ends: 4676 [2020-10-13 08:16:16,079 INFO L226 Difference]: Without dead ends: 3129 [2020-10-13 08:16:16,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-13 08:16:16,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3114. [2020-10-13 08:16:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3114 states. [2020-10-13 08:16:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 5325 transitions. [2020-10-13 08:16:16,194 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 5325 transitions. Word has length 118 [2020-10-13 08:16:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:16,197 INFO L479 AbstractCegarLoop]: Abstraction has 3114 states and 5325 transitions. [2020-10-13 08:16:16,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 5325 transitions. [2020-10-13 08:16:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 08:16:16,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:16,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:16,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:16:16,208 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:16,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:16,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1797369347, now seen corresponding path program 1 times [2020-10-13 08:16:16,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:16,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701592331] [2020-10-13 08:16:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:16,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:16:16,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:16:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 08:16:16,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:16:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:16:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:16,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:16,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:16,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:16,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:16,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:16:16,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:16,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:16:16,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:16,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:16,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:16:16,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:16,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 08:16:16,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:16,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:16:16,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:16:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:16,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701592331] [2020-10-13 08:16:16,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:16,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:16,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528046609] [2020-10-13 08:16:16,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:16,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:16,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:16,825 INFO L87 Difference]: Start difference. First operand 3114 states and 5325 transitions. Second operand 5 states. [2020-10-13 08:16:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:23,608 INFO L93 Difference]: Finished difference Result 6284 states and 10743 transitions. [2020-10-13 08:16:23,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:23,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 08:16:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:23,638 INFO L225 Difference]: With dead ends: 6284 [2020-10-13 08:16:23,638 INFO L226 Difference]: Without dead ends: 3129 [2020-10-13 08:16:23,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-13 08:16:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3114. [2020-10-13 08:16:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3114 states. [2020-10-13 08:16:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4925 transitions. [2020-10-13 08:16:23,728 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4925 transitions. Word has length 120 [2020-10-13 08:16:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:23,728 INFO L479 AbstractCegarLoop]: Abstraction has 3114 states and 4925 transitions. [2020-10-13 08:16:23,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4925 transitions. [2020-10-13 08:16:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 08:16:23,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:23,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:23,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:16:23,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:23,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1482214622, now seen corresponding path program 1 times [2020-10-13 08:16:23,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:23,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050074837] [2020-10-13 08:16:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:23,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:24,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:24,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:16:24,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:16:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-13 08:16:24,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:16:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 08:16:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:24,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:24,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:24,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:24,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:24,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:24,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:24,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:24,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:24,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:24,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:16:24,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 08:16:24,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:24,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:16:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:24,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050074837] [2020-10-13 08:16:24,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:24,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:16:24,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503396861] [2020-10-13 08:16:24,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:16:24,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:16:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:24,706 INFO L87 Difference]: Start difference. First operand 3114 states and 4925 transitions. Second operand 6 states. [2020-10-13 08:16:37,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:37,734 INFO L93 Difference]: Finished difference Result 12450 states and 20258 transitions. [2020-10-13 08:16:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:16:37,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-13 08:16:37,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:37,785 INFO L225 Difference]: With dead ends: 12450 [2020-10-13 08:16:37,785 INFO L226 Difference]: Without dead ends: 9342 [2020-10-13 08:16:37,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:16:37,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9342 states. [2020-10-13 08:16:37,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9342 to 9325. [2020-10-13 08:16:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9325 states. [2020-10-13 08:16:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9325 states to 9325 states and 13527 transitions. [2020-10-13 08:16:38,012 INFO L78 Accepts]: Start accepts. Automaton has 9325 states and 13527 transitions. Word has length 121 [2020-10-13 08:16:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:38,013 INFO L479 AbstractCegarLoop]: Abstraction has 9325 states and 13527 transitions. [2020-10-13 08:16:38,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:16:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 9325 states and 13527 transitions. [2020-10-13 08:16:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 08:16:38,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:38,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:38,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:16:38,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1534025061, now seen corresponding path program 1 times [2020-10-13 08:16:38,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:38,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069588122] [2020-10-13 08:16:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:38,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:38,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 08:16:38,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:16:38,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-13 08:16:38,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:38,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:38,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 08:16:38,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 08:16:38,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:38,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:38,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:38,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:16:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:38,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:39,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:39,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 08:16:39,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:16:39,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:16:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:16:39,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069588122] [2020-10-13 08:16:39,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:39,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:39,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633077211] [2020-10-13 08:16:39,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:39,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:39,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:39,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:39,193 INFO L87 Difference]: Start difference. First operand 9325 states and 13527 transitions. Second operand 5 states. [2020-10-13 08:16:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:16:49,164 INFO L93 Difference]: Finished difference Result 27971 states and 41760 transitions. [2020-10-13 08:16:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:16:49,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 08:16:49,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:16:49,252 INFO L225 Difference]: With dead ends: 27971 [2020-10-13 08:16:49,253 INFO L226 Difference]: Without dead ends: 18652 [2020-10-13 08:16:49,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:16:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18652 states. [2020-10-13 08:16:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18652 to 18640. [2020-10-13 08:16:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18640 states. [2020-10-13 08:16:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18640 states to 18640 states and 25710 transitions. [2020-10-13 08:16:49,724 INFO L78 Accepts]: Start accepts. Automaton has 18640 states and 25710 transitions. Word has length 164 [2020-10-13 08:16:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:16:49,725 INFO L479 AbstractCegarLoop]: Abstraction has 18640 states and 25710 transitions. [2020-10-13 08:16:49,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:16:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 18640 states and 25710 transitions. [2020-10-13 08:16:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-13 08:16:49,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:16:49,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:16:49,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:16:49,745 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:16:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:16:49,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2000078650, now seen corresponding path program 1 times [2020-10-13 08:16:49,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:16:49,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690899601] [2020-10-13 08:16:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:16:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:49,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:52,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:54,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:54,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 08:16:54,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:16:54,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 08:16:54,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:16:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-13 08:16:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:16:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:16:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:54,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:54,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:16:54,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:54,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:16:54,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:54,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:55,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:16:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:55,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:55,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:16:55,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:16:55,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:16:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:55,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:16:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 08:16:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:16:55,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:16:55,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:16:55,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 08:16:55,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:16:55,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-13 08:16:55,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:16:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:16:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:16:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-13 08:16:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:16:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 08:16:55,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690899601] [2020-10-13 08:16:55,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:16:55,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:16:55,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808935094] [2020-10-13 08:16:55,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:16:55,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:16:55,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:16:55,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:16:55,632 INFO L87 Difference]: Start difference. First operand 18640 states and 25710 transitions. Second operand 5 states. [2020-10-13 08:17:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:02,312 INFO L93 Difference]: Finished difference Result 37302 states and 51539 transitions. [2020-10-13 08:17:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:02,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-13 08:17:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:02,381 INFO L225 Difference]: With dead ends: 37302 [2020-10-13 08:17:02,381 INFO L226 Difference]: Without dead ends: 18652 [2020-10-13 08:17:02,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18652 states. [2020-10-13 08:17:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18652 to 18640. [2020-10-13 08:17:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18640 states. [2020-10-13 08:17:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18640 states to 18640 states and 25698 transitions. [2020-10-13 08:17:02,955 INFO L78 Accepts]: Start accepts. Automaton has 18640 states and 25698 transitions. Word has length 333 [2020-10-13 08:17:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:02,956 INFO L479 AbstractCegarLoop]: Abstraction has 18640 states and 25698 transitions. [2020-10-13 08:17:02,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 18640 states and 25698 transitions. [2020-10-13 08:17:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2020-10-13 08:17:03,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:03,014 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:17:03,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:17:03,015 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1901508820, now seen corresponding path program 1 times [2020-10-13 08:17:03,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:03,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045213320] [2020-10-13 08:17:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:03,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:08,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 710 [2020-10-13 08:17:08,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:17:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 08:17:08,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 659 [2020-10-13 08:17:08,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:17:08,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:08,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:08,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:08,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:17:08,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:08,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:08,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:17:08,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:17:08,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:08,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:08,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:08,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 08:17:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:09,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:09,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 581 [2020-10-13 08:17:09,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:09,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-13 08:17:09,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:09,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:09,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:09,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 569 [2020-10-13 08:17:09,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:17:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:10,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:10,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 08:17:10,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-13 08:17:10,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-13 08:17:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:17:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:10,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:10,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 08:17:10,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:17:10,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:10,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:17:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 08:17:11,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045213320] [2020-10-13 08:17:11,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:11,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:17:11,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022571442] [2020-10-13 08:17:11,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:17:11,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:11,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:17:11,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:17:11,082 INFO L87 Difference]: Start difference. First operand 18640 states and 25698 transitions. Second operand 5 states. [2020-10-13 08:17:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:23,044 INFO L93 Difference]: Finished difference Result 45832 states and 64928 transitions. [2020-10-13 08:17:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:17:23,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 694 [2020-10-13 08:17:23,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:23,165 INFO L225 Difference]: With dead ends: 45832 [2020-10-13 08:17:23,165 INFO L226 Difference]: Without dead ends: 27198 [2020-10-13 08:17:23,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:17:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27198 states. [2020-10-13 08:17:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27198 to 27186. [2020-10-13 08:17:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27186 states. [2020-10-13 08:17:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27186 states to 27186 states and 37457 transitions. [2020-10-13 08:17:23,989 INFO L78 Accepts]: Start accepts. Automaton has 27186 states and 37457 transitions. Word has length 694 [2020-10-13 08:17:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:23,990 INFO L479 AbstractCegarLoop]: Abstraction has 27186 states and 37457 transitions. [2020-10-13 08:17:23,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:17:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 27186 states and 37457 transitions. [2020-10-13 08:17:24,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-13 08:17:24,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:24,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:17:24,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:17:24,098 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash -983615758, now seen corresponding path program 1 times [2020-10-13 08:17:24,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:24,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511555136] [2020-10-13 08:17:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:24,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:29,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:29,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-13 08:17:29,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:17:29,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 08:17:29,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:29,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:17:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:17:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:17:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:29,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:29,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:29,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:29,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 08:17:29,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:17:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:29,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:29,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:17:29,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:29,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 08:17:29,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:17:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 08:17:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:30,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:30,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:17:30,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:30,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-13 08:17:30,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:17:30,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:30,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:30,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:17:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:30,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:17:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 08:17:30,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:17:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:30,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:30,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:30,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:17:30,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:17:30,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 76 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:17:32,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511555136] [2020-10-13 08:17:32,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:32,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:32,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733939897] [2020-10-13 08:17:32,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:32,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:32,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:32,200 INFO L87 Difference]: Start difference. First operand 27186 states and 37457 transitions. Second operand 7 states. [2020-10-13 08:17:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:17:44,076 INFO L93 Difference]: Finished difference Result 68063 states and 97541 transitions. [2020-10-13 08:17:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:17:44,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 809 [2020-10-13 08:17:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:17:44,214 INFO L225 Difference]: With dead ends: 68063 [2020-10-13 08:17:44,215 INFO L226 Difference]: Without dead ends: 40883 [2020-10-13 08:17:44,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 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 08:17:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40883 states. [2020-10-13 08:17:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40883 to 40778. [2020-10-13 08:17:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40778 states. [2020-10-13 08:17:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40778 states to 40778 states and 52137 transitions. [2020-10-13 08:17:45,072 INFO L78 Accepts]: Start accepts. Automaton has 40778 states and 52137 transitions. Word has length 809 [2020-10-13 08:17:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:17:45,072 INFO L479 AbstractCegarLoop]: Abstraction has 40778 states and 52137 transitions. [2020-10-13 08:17:45,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:17:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 40778 states and 52137 transitions. [2020-10-13 08:17:45,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2020-10-13 08:17:45,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:17:45,259 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:17:45,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:17:45,260 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:17:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:17:45,260 INFO L82 PathProgramCache]: Analyzing trace with hash 36008295, now seen corresponding path program 1 times [2020-10-13 08:17:45,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:17:45,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672800597] [2020-10-13 08:17:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:17:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 928 [2020-10-13 08:17:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:17:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 08:17:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:17:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:17:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:17:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:17:50,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:50,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:17:50,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:50,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:17:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:17:50,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 08:17:50,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:17:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:50,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:17:50,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 08:17:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:50,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:17:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:17:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:17:50,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:17:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:17:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:50,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 08:17:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:51,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:51,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:17:51,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-13 08:17:51,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:17:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:17:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:17:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:51,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:51,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:17:51,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 08:17:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:51,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:17:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:17:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:17:51,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:17:51,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:17:51,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:17:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:17:51,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:17:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:17:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:17:51,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:17:51,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:17:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 186 proven. 70 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-13 08:17:52,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672800597] [2020-10-13 08:17:52,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:17:52,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:17:52,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724868136] [2020-10-13 08:17:52,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:17:52,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:17:52,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:17:52,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:17:52,724 INFO L87 Difference]: Start difference. First operand 40778 states and 52137 transitions. Second operand 7 states. [2020-10-13 08:18:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:06,688 INFO L93 Difference]: Finished difference Result 84224 states and 110307 transitions. [2020-10-13 08:18:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:18:06,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 910 [2020-10-13 08:18:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:06,830 INFO L225 Difference]: With dead ends: 84224 [2020-10-13 08:18:06,830 INFO L226 Difference]: Without dead ends: 43452 [2020-10-13 08:18:06,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 08:18:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43452 states. [2020-10-13 08:18:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43452 to 34145. [2020-10-13 08:18:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34145 states. [2020-10-13 08:18:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34145 states to 34145 states and 42594 transitions. [2020-10-13 08:18:07,942 INFO L78 Accepts]: Start accepts. Automaton has 34145 states and 42594 transitions. Word has length 910 [2020-10-13 08:18:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:07,942 INFO L479 AbstractCegarLoop]: Abstraction has 34145 states and 42594 transitions. [2020-10-13 08:18:07,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:18:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 34145 states and 42594 transitions. [2020-10-13 08:18:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-10-13 08:18:07,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:08,000 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:18:08,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:18:08,000 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:08,001 INFO L82 PathProgramCache]: Analyzing trace with hash -493291010, now seen corresponding path program 1 times [2020-10-13 08:18:08,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:08,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377505369] [2020-10-13 08:18:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:13,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:13,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 935 [2020-10-13 08:18:13,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:13,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-13 08:18:13,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 08:18:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:18:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:13,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:13,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:13,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:13,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:18:13,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:13,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:13,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:13,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:13,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 08:18:13,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:13,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:18:13,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:18:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:13,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 08:18:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:18:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:18:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:18:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:13,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-13 08:18:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:18:13,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-13 08:18:13,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:18:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:18:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:18:14,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 08:18:14,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:14,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:18:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:14,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:14,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:18:14,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 08:18:14,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:14,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:14,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 193 proven. 77 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-13 08:18:14,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377505369] [2020-10-13 08:18:14,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:14,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:18:14,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128565992] [2020-10-13 08:18:14,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:18:14,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:14,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:18:14,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:14,947 INFO L87 Difference]: Start difference. First operand 34145 states and 42594 transitions. Second operand 7 states. [2020-10-13 08:18:36,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:18:36,936 INFO L93 Difference]: Finished difference Result 80489 states and 103114 transitions. [2020-10-13 08:18:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:18:36,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 917 [2020-10-13 08:18:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:18:37,112 INFO L225 Difference]: With dead ends: 80489 [2020-10-13 08:18:37,112 INFO L226 Difference]: Without dead ends: 46350 [2020-10-13 08:18:37,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 08:18:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46350 states. [2020-10-13 08:18:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46350 to 43984. [2020-10-13 08:18:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43984 states. [2020-10-13 08:18:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43984 states to 43984 states and 55182 transitions. [2020-10-13 08:18:38,078 INFO L78 Accepts]: Start accepts. Automaton has 43984 states and 55182 transitions. Word has length 917 [2020-10-13 08:18:38,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:18:38,079 INFO L479 AbstractCegarLoop]: Abstraction has 43984 states and 55182 transitions. [2020-10-13 08:18:38,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:18:38,080 INFO L276 IsEmpty]: Start isEmpty. Operand 43984 states and 55182 transitions. [2020-10-13 08:18:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-13 08:18:38,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:18:38,210 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:38,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:18:38,211 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:18:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:18:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash -787227454, now seen corresponding path program 1 times [2020-10-13 08:18:38,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:18:38,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974919266] [2020-10-13 08:18:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:18:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:43,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:43,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-13 08:18:43,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:18:43,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-13 08:18:43,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-13 08:18:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:18:43,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:43,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:18:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:43,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:43,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:18:43,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:43,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:18:43,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:18:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:43,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:43,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:43,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:18:43,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:18:43,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:43,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:43,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:18:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:43,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:43,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 08:18:43,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:43,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:18:43,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:18:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:43,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-13 08:18:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-13 08:18:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:18:45,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-10-13 08:18:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:18:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:18:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:18:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-13 08:18:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:45,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:18:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:46,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:46,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:18:46,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:18:46,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:46,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:46,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:18:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:18:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:18:46,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:18:46,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:18:46,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:18:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:18:46,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:18:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:18:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:18:46,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:18:46,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:18:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 315 proven. 77 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2020-10-13 08:18:47,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974919266] [2020-10-13 08:18:47,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:18:47,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:18:47,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11406760] [2020-10-13 08:18:47,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:18:47,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:18:47,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:18:47,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:18:47,080 INFO L87 Difference]: Start difference. First operand 43984 states and 55182 transitions. Second operand 7 states. [2020-10-13 08:19:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:19:07,400 INFO L93 Difference]: Finished difference Result 97557 states and 124667 transitions. [2020-10-13 08:19:07,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:19:07,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1129 [2020-10-13 08:19:07,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:19:07,621 INFO L225 Difference]: With dead ends: 97557 [2020-10-13 08:19:07,621 INFO L226 Difference]: Without dead ends: 53583 [2020-10-13 08:19:07,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:19:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53583 states. [2020-10-13 08:19:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53583 to 52740. [2020-10-13 08:19:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52740 states. [2020-10-13 08:19:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52740 states to 52740 states and 65941 transitions. [2020-10-13 08:19:09,184 INFO L78 Accepts]: Start accepts. Automaton has 52740 states and 65941 transitions. Word has length 1129 [2020-10-13 08:19:09,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:19:09,186 INFO L479 AbstractCegarLoop]: Abstraction has 52740 states and 65941 transitions. [2020-10-13 08:19:09,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:19:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 52740 states and 65941 transitions. [2020-10-13 08:19:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1182 [2020-10-13 08:19:09,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:19:09,375 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:09,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:19:09,376 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:19:09,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:19:09,377 INFO L82 PathProgramCache]: Analyzing trace with hash -894365138, now seen corresponding path program 1 times [2020-10-13 08:19:09,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:19:09,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405187341] [2020-10-13 08:19:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:19:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:11,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:15,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:15,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1205 [2020-10-13 08:19:15,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:19:15,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6053 [2020-10-13 08:19:15,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-13 08:19:15,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:19:15,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:15,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:19:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:15,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:15,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:19:15,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:19:15,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:15,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:19:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:15,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:15,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 08:19:15,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:15,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:19:15,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:15,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:15,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:15,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 08:19:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:15,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:19:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 08:19:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:16,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:16,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:19:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 08:19:16,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:19:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:19:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:19:16,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:16,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-13 08:19:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:16,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:19:16,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:19:16,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-13 08:19:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-13 08:19:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:16,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-13 08:19:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:16,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 696 [2020-10-13 08:19:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-13 08:19:16,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 693 [2020-10-13 08:19:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:19:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:16,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:16,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-13 08:19:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:19:16,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:16,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:19:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:19:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:19:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:19:17,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 08:19:17,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:19:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:19:17,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:19:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:19:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:19:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:19:17,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:19:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 389 proven. 200 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2020-10-13 08:19:17,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405187341] [2020-10-13 08:19:17,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:19:17,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:19:17,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624605990] [2020-10-13 08:19:17,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:19:17,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:19:17,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:19:17,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:19:17,799 INFO L87 Difference]: Start difference. First operand 52740 states and 65941 transitions. Second operand 7 states.