/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/Problem16_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:17:22,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:17:22,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:17:22,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:17:22,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:17:22,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:17:22,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:17:22,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:17:22,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:17:22,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:17:22,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:17:22,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:17:22,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:17:22,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:17:22,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:17:22,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:17:22,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:17:22,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:17:22,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:17:22,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:17:22,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:17:22,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:17:22,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:17:22,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:17:22,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:17:22,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:17:22,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:17:22,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:17:22,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:17:22,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:17:22,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:17:22,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:17:22,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:17:22,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:17:22,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:17:22,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:17:22,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:17:22,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:17:22,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:17:22,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:17:22,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:17:22,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:17:22,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:17:22,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:17:22,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:17:22,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:17:22,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:17:22,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:17:22,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:17:22,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:17:22,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:17:22,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:17:22,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:17:22,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:17:22,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:17:22,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:17:22,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:17:22,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:17:22,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:17:22,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:17:22,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:17:22,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:17:22,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:17:22,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:17:22,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:17:22,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:17:22,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:17:22,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:17:22,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:17:22,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:17:22,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:17:22,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:17:22,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:17:22,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:17:22,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:17:22,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:17:22,963 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:17:22,964 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label19.c [2020-10-13 09:17:23,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e739f603f/f9e0d7dc058149fe94820adfe30b8331/FLAG8e1cb5911 [2020-10-13 09:17:23,789 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:17:23,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label19.c [2020-10-13 09:17:23,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e739f603f/f9e0d7dc058149fe94820adfe30b8331/FLAG8e1cb5911 [2020-10-13 09:17:23,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e739f603f/f9e0d7dc058149fe94820adfe30b8331 [2020-10-13 09:17:23,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:17:23,923 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:17:23,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:17:23,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:17:23,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:17:23,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:23" (1/1) ... [2020-10-13 09:17:23,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49320105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:23, skipping insertion in model container [2020-10-13 09:17:23,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:23" (1/1) ... [2020-10-13 09:17:23,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:17:24,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:17:24,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:17:24,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:17:25,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:17:25,204 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:17:25,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25 WrapperNode [2020-10-13 09:17:25,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:17:25,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:17:25,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:17:25,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:17:25,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... [2020-10-13 09:17:25,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... [2020-10-13 09:17:25,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... [2020-10-13 09:17:25,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... [2020-10-13 09:17:25,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... [2020-10-13 09:17:25,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... [2020-10-13 09:17:25,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... [2020-10-13 09:17:25,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:17:25,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:17:25,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:17:25,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:17:25,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:17:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:17:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:17:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:17:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:17:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:17:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:17:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:17:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:17:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:17:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:17:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:17:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:17:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:17:27,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:17:27,685 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:17:27,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:27 BoogieIcfgContainer [2020-10-13 09:17:27,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:17:27,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:17:27,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:17:27,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:17:27,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:23" (1/3) ... [2020-10-13 09:17:27,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ca0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:27, skipping insertion in model container [2020-10-13 09:17:27,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:25" (2/3) ... [2020-10-13 09:17:27,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ca0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:27, skipping insertion in model container [2020-10-13 09:17:27,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:27" (3/3) ... [2020-10-13 09:17:27,704 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label19.c [2020-10-13 09:17:27,716 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:17:27,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:17:27,741 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:17:27,769 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:17:27,769 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:17:27,769 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:17:27,769 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:17:27,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:17:27,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:17:27,770 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:17:27,770 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:17:27,799 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:17:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 09:17:27,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:27,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:27,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:27,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:27,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1232696998, now seen corresponding path program 1 times [2020-10-13 09:17:27,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:27,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737417724] [2020-10-13 09:17:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:28,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 09:17:28,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-13 09:17:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:17:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:17:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:17:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 09:17:28,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:28,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:28,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:28,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:28,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:17:28,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:17:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:17:28,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737417724] [2020-10-13 09:17:28,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:17:28,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:17:28,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904514906] [2020-10-13 09:17:28,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:17:28,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:28,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:17:28,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:17:28,783 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:17:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:32,301 INFO L93 Difference]: Finished difference Result 1169 states and 2164 transitions. [2020-10-13 09:17:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:32,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-13 09:17:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:32,323 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:17:32,324 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:17:32,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:17:32,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 692. [2020-10-13 09:17:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-13 09:17:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1014 transitions. [2020-10-13 09:17:32,435 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1014 transitions. Word has length 49 [2020-10-13 09:17:32,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:32,436 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 1014 transitions. [2020-10-13 09:17:32,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:17:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1014 transitions. [2020-10-13 09:17:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 09:17:32,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:32,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:32,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:17:32,444 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:32,444 INFO L82 PathProgramCache]: Analyzing trace with hash -388481722, now seen corresponding path program 1 times [2020-10-13 09:17:32,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:32,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730185995] [2020-10-13 09:17:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:32,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:33,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:33,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 09:17:33,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:33,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-13 09:17:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:17:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:17:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:17:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:33,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:33,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:17:33,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:33,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:33,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:17:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:33,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:33,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:17:33,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:33,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:17:33,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:17:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:17:33,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730185995] [2020-10-13 09:17:33,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:33,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:33,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703967999] [2020-10-13 09:17:33,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:33,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:33,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:33,701 INFO L87 Difference]: Start difference. First operand 692 states and 1014 transitions. Second operand 5 states. [2020-10-13 09:17:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:37,256 INFO L93 Difference]: Finished difference Result 1724 states and 2649 transitions. [2020-10-13 09:17:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:37,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 09:17:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:37,265 INFO L225 Difference]: With dead ends: 1724 [2020-10-13 09:17:37,265 INFO L226 Difference]: Without dead ends: 1038 [2020-10-13 09:17:37,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:17:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-13 09:17:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-13 09:17:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-13 09:17:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1429 transitions. [2020-10-13 09:17:37,315 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1429 transitions. Word has length 125 [2020-10-13 09:17:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:37,316 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1429 transitions. [2020-10-13 09:17:37,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1429 transitions. [2020-10-13 09:17:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 09:17:37,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:37,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:37,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:17:37,324 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:37,325 INFO L82 PathProgramCache]: Analyzing trace with hash 144310943, now seen corresponding path program 1 times [2020-10-13 09:17:37,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:37,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594977639] [2020-10-13 09:17:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 09:17:39,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-13 09:17:39,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 09:17:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:17:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:39,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:39,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:39,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:39,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:39,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 09:17:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:17:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:17:39,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594977639] [2020-10-13 09:17:39,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:39,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:39,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084409697] [2020-10-13 09:17:39,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:39,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:39,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:39,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:39,403 INFO L87 Difference]: Start difference. First operand 1034 states and 1429 transitions. Second operand 5 states. [2020-10-13 09:17:42,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:42,967 INFO L93 Difference]: Finished difference Result 3086 states and 4302 transitions. [2020-10-13 09:17:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:42,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-13 09:17:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:42,983 INFO L225 Difference]: With dead ends: 3086 [2020-10-13 09:17:42,983 INFO L226 Difference]: Without dead ends: 2058 [2020-10-13 09:17:42,987 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 09:17:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-13 09:17:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2054. [2020-10-13 09:17:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-10-13 09:17:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2564 transitions. [2020-10-13 09:17:43,069 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2564 transitions. Word has length 178 [2020-10-13 09:17:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:43,071 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2564 transitions. [2020-10-13 09:17:43,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:43,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2564 transitions. [2020-10-13 09:17:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 09:17:43,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:43,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:43,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:17:43,087 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:43,088 INFO L82 PathProgramCache]: Analyzing trace with hash 574242883, now seen corresponding path program 1 times [2020-10-13 09:17:43,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:43,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043831223] [2020-10-13 09:17:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:44,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:44,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 09:17:44,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-13 09:17:44,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:44,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:17:44,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:17:44,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:44,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:44,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:44,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:44,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:44,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:44,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:17:44,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:44,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:17:44,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 09:17:44,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:17:44,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043831223] [2020-10-13 09:17:44,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:44,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:44,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337196008] [2020-10-13 09:17:44,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:44,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:44,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:44,662 INFO L87 Difference]: Start difference. First operand 2054 states and 2564 transitions. Second operand 5 states. [2020-10-13 09:17:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:48,188 INFO L93 Difference]: Finished difference Result 4787 states and 6174 transitions. [2020-10-13 09:17:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:48,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-13 09:17:48,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:48,202 INFO L225 Difference]: With dead ends: 4787 [2020-10-13 09:17:48,202 INFO L226 Difference]: Without dead ends: 2739 [2020-10-13 09:17:48,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:17:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2020-10-13 09:17:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2735. [2020-10-13 09:17:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2020-10-13 09:17:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3353 transitions. [2020-10-13 09:17:48,271 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3353 transitions. Word has length 212 [2020-10-13 09:17:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:48,272 INFO L479 AbstractCegarLoop]: Abstraction has 2735 states and 3353 transitions. [2020-10-13 09:17:48,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:48,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3353 transitions. [2020-10-13 09:17:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-13 09:17:48,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:48,276 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:17:48,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:17:48,277 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash 661718422, now seen corresponding path program 1 times [2020-10-13 09:17:48,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:48,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937196120] [2020-10-13 09:17:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:48,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-13 09:17:52,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:17:52,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4031 [2020-10-13 09:17:52,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-13 09:17:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:17:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:52,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:52,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:52,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:52,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:17:52,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:52,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:17:52,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:52,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:17:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:52,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:52,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:17:52,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:17:52,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:52,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:17:52,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 09:17:52,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937196120] [2020-10-13 09:17:52,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:52,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:17:52,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321497483] [2020-10-13 09:17:52,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:17:52,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:52,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:17:52,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:17:52,632 INFO L87 Difference]: Start difference. First operand 2735 states and 3353 transitions. Second operand 5 states. [2020-10-13 09:17:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:56,802 INFO L93 Difference]: Finished difference Result 6830 states and 8549 transitions. [2020-10-13 09:17:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:17:56,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-13 09:17:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:56,822 INFO L225 Difference]: With dead ends: 6830 [2020-10-13 09:17:56,823 INFO L226 Difference]: Without dead ends: 4101 [2020-10-13 09:17:56,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:17:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2020-10-13 09:17:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 3760. [2020-10-13 09:17:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3760 states. [2020-10-13 09:17:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 4660 transitions. [2020-10-13 09:17:56,945 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 4660 transitions. Word has length 235 [2020-10-13 09:17:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:56,946 INFO L479 AbstractCegarLoop]: Abstraction has 3760 states and 4660 transitions. [2020-10-13 09:17:56,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:17:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 4660 transitions. [2020-10-13 09:17:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-13 09:17:56,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:56,954 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, 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, 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] [2020-10-13 09:17:56,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:17:56,955 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:56,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:56,955 INFO L82 PathProgramCache]: Analyzing trace with hash -799180998, now seen corresponding path program 1 times [2020-10-13 09:17:56,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:56,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658460168] [2020-10-13 09:17:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:57,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:57,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:01,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-13 09:18:01,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:18:01,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 272 [2020-10-13 09:18:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:18:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:02,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:02,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:02,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:18:02,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:02,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:18:02,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:02,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:18:02,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:18:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:02,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:02,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:02,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:18:02,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:18:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:02,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:02,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:18:02,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:18:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:18:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-13 09:18:02,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658460168] [2020-10-13 09:18:02,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:02,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:02,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145344466] [2020-10-13 09:18:02,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:02,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:02,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:02,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:02,442 INFO L87 Difference]: Start difference. First operand 3760 states and 4660 transitions. Second operand 5 states. [2020-10-13 09:18:05,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:05,871 INFO L93 Difference]: Finished difference Result 8202 states and 10485 transitions. [2020-10-13 09:18:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:05,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-13 09:18:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:05,896 INFO L225 Difference]: With dead ends: 8202 [2020-10-13 09:18:05,896 INFO L226 Difference]: Without dead ends: 4448 [2020-10-13 09:18:05,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:18:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2020-10-13 09:18:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4444. [2020-10-13 09:18:06,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4444 states. [2020-10-13 09:18:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4444 states to 4444 states and 5566 transitions. [2020-10-13 09:18:06,026 INFO L78 Accepts]: Start accepts. Automaton has 4444 states and 5566 transitions. Word has length 307 [2020-10-13 09:18:06,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:06,027 INFO L479 AbstractCegarLoop]: Abstraction has 4444 states and 5566 transitions. [2020-10-13 09:18:06,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4444 states and 5566 transitions. [2020-10-13 09:18:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-13 09:18:06,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:06,037 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:06,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:18:06,037 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:06,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:06,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1077083422, now seen corresponding path program 1 times [2020-10-13 09:18:06,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:06,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402535293] [2020-10-13 09:18:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:06,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:07,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-13 09:18:11,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:18:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 09:18:11,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 09:18:11,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:11,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:11,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:11,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:11,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:11,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:11,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:18:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:18:11,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:18:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:18:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:11,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 09:18:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:18:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:11,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 09:18:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:11,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:11,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:18:11,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:18:11,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-13 09:18:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 203 proven. 109 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:18:11,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402535293] [2020-10-13 09:18:11,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:11,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:11,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389256768] [2020-10-13 09:18:11,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:11,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:11,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:11,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:11,973 INFO L87 Difference]: Start difference. First operand 4444 states and 5566 transitions. Second operand 7 states. [2020-10-13 09:18:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:17,229 INFO L93 Difference]: Finished difference Result 10736 states and 13559 transitions. [2020-10-13 09:18:17,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:18:17,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-13 09:18:17,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:17,263 INFO L225 Difference]: With dead ends: 10736 [2020-10-13 09:18:17,263 INFO L226 Difference]: Without dead ends: 6221 [2020-10-13 09:18:17,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2020-10-13 09:18:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 6165. [2020-10-13 09:18:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6165 states. [2020-10-13 09:18:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6165 states to 6165 states and 7449 transitions. [2020-10-13 09:18:17,485 INFO L78 Accepts]: Start accepts. Automaton has 6165 states and 7449 transitions. Word has length 359 [2020-10-13 09:18:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:17,486 INFO L479 AbstractCegarLoop]: Abstraction has 6165 states and 7449 transitions. [2020-10-13 09:18:17,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 6165 states and 7449 transitions. [2020-10-13 09:18:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-13 09:18:17,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:17,498 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:17,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:18:17,498 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash 184163215, now seen corresponding path program 1 times [2020-10-13 09:18:17,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:17,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9083364] [2020-10-13 09:18:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-13 09:18:22,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:18:22,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 339 [2020-10-13 09:18:22,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:18:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:22,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:22,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:18:22,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:18:22,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:22,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:18:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:22,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:18:22,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:18:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:22,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:22,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:18:22,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:18:22,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 09:18:22,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 09:18:22,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9083364] [2020-10-13 09:18:22,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:22,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:22,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667864588] [2020-10-13 09:18:22,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:22,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:22,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:22,969 INFO L87 Difference]: Start difference. First operand 6165 states and 7449 transitions. Second operand 5 states. [2020-10-13 09:18:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:25,376 INFO L93 Difference]: Finished difference Result 10651 states and 12917 transitions. [2020-10-13 09:18:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:25,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 374 [2020-10-13 09:18:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:25,401 INFO L225 Difference]: With dead ends: 10651 [2020-10-13 09:18:25,401 INFO L226 Difference]: Without dead ends: 6169 [2020-10-13 09:18:25,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:18:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2020-10-13 09:18:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 6165. [2020-10-13 09:18:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6165 states. [2020-10-13 09:18:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6165 states to 6165 states and 7446 transitions. [2020-10-13 09:18:25,616 INFO L78 Accepts]: Start accepts. Automaton has 6165 states and 7446 transitions. Word has length 374 [2020-10-13 09:18:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:25,617 INFO L479 AbstractCegarLoop]: Abstraction has 6165 states and 7446 transitions. [2020-10-13 09:18:25,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6165 states and 7446 transitions. [2020-10-13 09:18:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-13 09:18:25,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:25,635 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, 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, 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] [2020-10-13 09:18:25,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:18:25,635 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:25,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1920430738, now seen corresponding path program 1 times [2020-10-13 09:18:25,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:25,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955259123] [2020-10-13 09:18:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:25,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:26,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:27,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:30,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:30,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-13 09:18:30,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:18:30,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-13 09:18:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:18:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:30,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:30,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:30,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:30,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:30,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:30,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:30,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:30,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:30,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:30,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:18:30,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:30,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:18:30,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:18:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:30,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:30,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:30,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:18:30,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:18:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:31,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:31,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:18:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 09:18:31,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 09:18:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 09:18:31,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955259123] [2020-10-13 09:18:31,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:31,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:31,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236442662] [2020-10-13 09:18:31,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:31,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:31,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:31,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:31,291 INFO L87 Difference]: Start difference. First operand 6165 states and 7446 transitions. Second operand 5 states. [2020-10-13 09:18:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:33,812 INFO L93 Difference]: Finished difference Result 10654 states and 12915 transitions. [2020-10-13 09:18:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:33,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-10-13 09:18:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:33,842 INFO L225 Difference]: With dead ends: 10654 [2020-10-13 09:18:33,842 INFO L226 Difference]: Without dead ends: 6169 [2020-10-13 09:18:33,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:18:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2020-10-13 09:18:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 6165. [2020-10-13 09:18:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6165 states. [2020-10-13 09:18:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6165 states to 6165 states and 7443 transitions. [2020-10-13 09:18:33,971 INFO L78 Accepts]: Start accepts. Automaton has 6165 states and 7443 transitions. Word has length 423 [2020-10-13 09:18:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:33,972 INFO L479 AbstractCegarLoop]: Abstraction has 6165 states and 7443 transitions. [2020-10-13 09:18:33,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:33,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6165 states and 7443 transitions. [2020-10-13 09:18:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-13 09:18:33,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:33,993 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, 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, 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] [2020-10-13 09:18:33,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:18:33,994 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:33,995 INFO L82 PathProgramCache]: Analyzing trace with hash 56537874, now seen corresponding path program 1 times [2020-10-13 09:18:33,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:33,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410359955] [2020-10-13 09:18:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-13 09:18:39,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:18:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:18:39,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 390 [2020-10-13 09:18:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:18:39,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:18:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:18:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:18:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:39,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:18:39,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:39,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:39,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:18:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 09:18:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 09:18:39,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410359955] [2020-10-13 09:18:39,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:39,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:39,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261921461] [2020-10-13 09:18:39,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:39,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:39,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:39,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:39,453 INFO L87 Difference]: Start difference. First operand 6165 states and 7443 transitions. Second operand 5 states. [2020-10-13 09:18:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:41,921 INFO L93 Difference]: Finished difference Result 10638 states and 12897 transitions. [2020-10-13 09:18:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:41,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-10-13 09:18:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:41,940 INFO L225 Difference]: With dead ends: 10638 [2020-10-13 09:18:41,941 INFO L226 Difference]: Without dead ends: 6169 [2020-10-13 09:18:41,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:18:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2020-10-13 09:18:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 6165. [2020-10-13 09:18:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6165 states. [2020-10-13 09:18:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6165 states to 6165 states and 7437 transitions. [2020-10-13 09:18:42,174 INFO L78 Accepts]: Start accepts. Automaton has 6165 states and 7437 transitions. Word has length 425 [2020-10-13 09:18:42,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:42,175 INFO L479 AbstractCegarLoop]: Abstraction has 6165 states and 7437 transitions. [2020-10-13 09:18:42,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:42,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6165 states and 7437 transitions. [2020-10-13 09:18:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-13 09:18:42,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:42,199 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, 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, 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] [2020-10-13 09:18:42,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:18:42,200 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:42,200 INFO L82 PathProgramCache]: Analyzing trace with hash -2143253581, now seen corresponding path program 1 times [2020-10-13 09:18:42,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:42,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015603746] [2020-10-13 09:18:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-13 09:18:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:18:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:18:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:47,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:47,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:18:47,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:18:47,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:47,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:18:47,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:47,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:18:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:47,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:47,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 09:18:47,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:18:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 09:18:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:47,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:18:47,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:18:47,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:18:47,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:47,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 218 proven. 109 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 09:18:47,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015603746] [2020-10-13 09:18:47,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:47,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:47,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827841997] [2020-10-13 09:18:47,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:47,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:47,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:47,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:47,949 INFO L87 Difference]: Start difference. First operand 6165 states and 7437 transitions. Second operand 7 states. [2020-10-13 09:18:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:51,185 INFO L93 Difference]: Finished difference Result 12495 states and 15343 transitions. [2020-10-13 09:18:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:18:51,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-13 09:18:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:51,206 INFO L225 Difference]: With dead ends: 12495 [2020-10-13 09:18:51,207 INFO L226 Difference]: Without dead ends: 6275 [2020-10-13 09:18:51,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:18:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6275 states. [2020-10-13 09:18:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6275 to 4120. [2020-10-13 09:18:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4120 states. [2020-10-13 09:18:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 4909 transitions. [2020-10-13 09:18:51,324 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 4909 transitions. Word has length 536 [2020-10-13 09:18:51,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:51,325 INFO L479 AbstractCegarLoop]: Abstraction has 4120 states and 4909 transitions. [2020-10-13 09:18:51,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:18:51,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 4909 transitions. [2020-10-13 09:18:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-13 09:18:51,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:51,337 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-13 09:18:51,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:18:51,337 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:51,338 INFO L82 PathProgramCache]: Analyzing trace with hash -168427382, now seen corresponding path program 1 times [2020-10-13 09:18:51,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:51,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363367750] [2020-10-13 09:18:51,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:51,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-13 09:18:56,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:18:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 09:18:56,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:18:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 09:18:56,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:18:56,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:18:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 09:18:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:56,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:56,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 09:18:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:56,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:18:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-13 09:18:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:56,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:56,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:56,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:18:56,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:56,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:18:56,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:18:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 221 proven. 109 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 09:18:57,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363367750] [2020-10-13 09:18:57,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:57,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:57,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203377637] [2020-10-13 09:18:57,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:57,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:57,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:57,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:57,077 INFO L87 Difference]: Start difference. First operand 4120 states and 4909 transitions. Second operand 7 states. [2020-10-13 09:19:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:00,346 INFO L93 Difference]: Finished difference Result 8428 states and 10314 transitions. [2020-10-13 09:19:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:00,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-13 09:19:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:00,368 INFO L225 Difference]: With dead ends: 8428 [2020-10-13 09:19:00,369 INFO L226 Difference]: Without dead ends: 4237 [2020-10-13 09:19:00,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2020-10-13 09:19:00,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 4117. [2020-10-13 09:19:00,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4117 states. [2020-10-13 09:19:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 4626 transitions. [2020-10-13 09:19:00,463 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 4626 transitions. Word has length 539 [2020-10-13 09:19:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:00,464 INFO L479 AbstractCegarLoop]: Abstraction has 4117 states and 4626 transitions. [2020-10-13 09:19:00,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 4626 transitions. [2020-10-13 09:19:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-13 09:19:00,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:00,478 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:19:00,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:19:00,478 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:00,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:00,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1900290987, now seen corresponding path program 1 times [2020-10-13 09:19:00,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:00,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538072694] [2020-10-13 09:19:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:00,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:01,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:05,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:05,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 642 [2020-10-13 09:19:05,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:19:05,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:19:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:19:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:05,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:05,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 09:19:05,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:19:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-13 09:19:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 09:19:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:06,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:06,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-13 09:19:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:06,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-13 09:19:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:06,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:06,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:19:06,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:19:06,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:19:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 237 proven. 109 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-13 09:19:07,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538072694] [2020-10-13 09:19:07,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:07,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:19:07,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987594046] [2020-10-13 09:19:07,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:19:07,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:07,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:19:07,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:19:07,053 INFO L87 Difference]: Start difference. First operand 4117 states and 4626 transitions. Second operand 10 states. [2020-10-13 09:19:07,317 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-13 09:19:07,461 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-13 09:19:09,019 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-13 09:19:09,179 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-13 09:19:11,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:11,485 INFO L93 Difference]: Finished difference Result 8522 states and 9615 transitions. [2020-10-13 09:19:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 09:19:11,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 628 [2020-10-13 09:19:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:11,499 INFO L225 Difference]: With dead ends: 8522 [2020-10-13 09:19:11,499 INFO L226 Difference]: Without dead ends: 4320 [2020-10-13 09:19:11,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-13 09:19:11,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2020-10-13 09:19:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 4128. [2020-10-13 09:19:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4128 states. [2020-10-13 09:19:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 4584 transitions. [2020-10-13 09:19:11,580 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 4584 transitions. Word has length 628 [2020-10-13 09:19:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:11,581 INFO L479 AbstractCegarLoop]: Abstraction has 4128 states and 4584 transitions. [2020-10-13 09:19:11,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:19:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 4584 transitions. [2020-10-13 09:19:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2020-10-13 09:19:11,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:11,602 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:19:11,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:19:11,603 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:11,603 INFO L82 PathProgramCache]: Analyzing trace with hash -368796553, now seen corresponding path program 1 times [2020-10-13 09:19:11,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:11,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007834316] [2020-10-13 09:19:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:11,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 768 [2020-10-13 09:19:16,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:16,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 09:19:16,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 719 [2020-10-13 09:19:16,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 09:19:16,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:16,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:16,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:19:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:19:16,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:19:16,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:19:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:17,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:17,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:17,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:19:17,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 09:19:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:17,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:19:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 09:19:17,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-13 09:19:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 173 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2020-10-13 09:19:17,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007834316] [2020-10-13 09:19:17,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:17,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:17,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823434135] [2020-10-13 09:19:17,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:17,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:17,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:17,510 INFO L87 Difference]: Start difference. First operand 4128 states and 4584 transitions. Second operand 5 states. [2020-10-13 09:19:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:20,462 INFO L93 Difference]: Finished difference Result 9953 states and 11221 transitions. [2020-10-13 09:19:20,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:20,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 752 [2020-10-13 09:19:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:20,479 INFO L225 Difference]: With dead ends: 9953 [2020-10-13 09:19:20,479 INFO L226 Difference]: Without dead ends: 5831 [2020-10-13 09:19:20,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:19:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2020-10-13 09:19:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 5825. [2020-10-13 09:19:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5825 states. [2020-10-13 09:19:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 6395 transitions. [2020-10-13 09:19:20,595 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 6395 transitions. Word has length 752 [2020-10-13 09:19:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:20,597 INFO L479 AbstractCegarLoop]: Abstraction has 5825 states and 6395 transitions. [2020-10-13 09:19:20,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 6395 transitions. [2020-10-13 09:19:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2020-10-13 09:19:20,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:20,620 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:19:20,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:19:20,620 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash 703144374, now seen corresponding path program 1 times [2020-10-13 09:19:20,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:20,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605223343] [2020-10-13 09:19:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:20,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 783 [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 319 [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:25,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:25,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:19:25,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:19:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:19:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:19:25,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:19:25,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:25,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 09:19:25,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-13 09:19:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:26,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-13 09:19:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:26,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:26,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:26,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:19:26,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:26,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:19:26,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:26,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:26,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:19:26,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:26,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:26,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:26,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:19:26,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:19:26,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:26,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:26,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 395 proven. 109 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2020-10-13 09:19:26,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605223343] [2020-10-13 09:19:26,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:26,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:26,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199546121] [2020-10-13 09:19:26,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:26,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:26,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:26,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:26,620 INFO L87 Difference]: Start difference. First operand 5825 states and 6395 transitions. Second operand 7 states. [2020-10-13 09:19:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:30,429 INFO L93 Difference]: Finished difference Result 13832 states and 15781 transitions. [2020-10-13 09:19:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:30,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 765 [2020-10-13 09:19:30,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:30,446 INFO L225 Difference]: With dead ends: 13832 [2020-10-13 09:19:30,446 INFO L226 Difference]: Without dead ends: 8013 [2020-10-13 09:19:30,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:19:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8013 states. [2020-10-13 09:19:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8013 to 7911. [2020-10-13 09:19:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7911 states. [2020-10-13 09:19:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7911 states to 7911 states and 8674 transitions. [2020-10-13 09:19:30,703 INFO L78 Accepts]: Start accepts. Automaton has 7911 states and 8674 transitions. Word has length 765 [2020-10-13 09:19:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:30,704 INFO L479 AbstractCegarLoop]: Abstraction has 7911 states and 8674 transitions. [2020-10-13 09:19:30,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7911 states and 8674 transitions. [2020-10-13 09:19:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2020-10-13 09:19:30,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:30,727 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:30,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:19:30,727 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:30,728 INFO L82 PathProgramCache]: Analyzing trace with hash -205290129, now seen corresponding path program 1 times [2020-10-13 09:19:30,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:30,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916309155] [2020-10-13 09:19:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:35,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 800 [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 336 [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:35,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:35,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:35,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:35,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:35,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:35,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:35,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:36,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:19:36,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:19:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:36,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:19:36,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-13 09:19:36,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-10-13 09:19:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-13 09:19:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:19:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:19:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:36,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:19:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:36,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:36,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:36,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:19:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:36,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 395 proven. 109 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2020-10-13 09:19:37,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916309155] [2020-10-13 09:19:37,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:37,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:19:37,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190735945] [2020-10-13 09:19:37,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:19:37,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:37,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:19:37,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:19:37,038 INFO L87 Difference]: Start difference. First operand 7911 states and 8674 transitions. Second operand 8 states. [2020-10-13 09:19:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:43,086 INFO L93 Difference]: Finished difference Result 19714 states and 22342 transitions. [2020-10-13 09:19:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:19:43,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 782 [2020-10-13 09:19:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:43,121 INFO L225 Difference]: With dead ends: 19714 [2020-10-13 09:19:43,121 INFO L226 Difference]: Without dead ends: 11809 [2020-10-13 09:19:43,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:19:43,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2020-10-13 09:19:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 11667. [2020-10-13 09:19:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11667 states. [2020-10-13 09:19:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11667 states to 11667 states and 12663 transitions. [2020-10-13 09:19:43,343 INFO L78 Accepts]: Start accepts. Automaton has 11667 states and 12663 transitions. Word has length 782 [2020-10-13 09:19:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:43,344 INFO L479 AbstractCegarLoop]: Abstraction has 11667 states and 12663 transitions. [2020-10-13 09:19:43,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:19:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11667 states and 12663 transitions. [2020-10-13 09:19:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-10-13 09:19:43,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:43,373 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:43,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:19:43,373 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:43,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1399147758, now seen corresponding path program 1 times [2020-10-13 09:19:43,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:43,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142234631] [2020-10-13 09:19:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 881 [2020-10-13 09:19:48,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:19:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:19:48,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 417 [2020-10-13 09:19:48,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:19:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:48,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:48,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:19:48,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:19:48,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 09:19:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:19:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 09:19:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-13 09:19:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-10-13 09:19:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:49,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 09:19:49,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:49,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-13 09:19:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:19:49,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:19:49,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:19:49,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:49,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:19:49,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:49,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:49,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 395 proven. 109 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2020-10-13 09:19:49,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142234631] [2020-10-13 09:19:49,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:49,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:49,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547978694] [2020-10-13 09:19:49,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:49,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:49,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:49,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:49,578 INFO L87 Difference]: Start difference. First operand 11667 states and 12663 transitions. Second operand 7 states. [2020-10-13 09:19:52,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:52,928 INFO L93 Difference]: Finished difference Result 25377 states and 27954 transitions. [2020-10-13 09:19:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:52,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 863 [2020-10-13 09:19:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:52,956 INFO L225 Difference]: With dead ends: 25377 [2020-10-13 09:19:52,956 INFO L226 Difference]: Without dead ends: 13716 [2020-10-13 09:19:52,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:52,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13716 states. [2020-10-13 09:19:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13716 to 13708. [2020-10-13 09:19:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13708 states. [2020-10-13 09:19:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13708 states to 13708 states and 14891 transitions. [2020-10-13 09:19:53,128 INFO L78 Accepts]: Start accepts. Automaton has 13708 states and 14891 transitions. Word has length 863 [2020-10-13 09:19:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:53,129 INFO L479 AbstractCegarLoop]: Abstraction has 13708 states and 14891 transitions. [2020-10-13 09:19:53,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:53,129 INFO L276 IsEmpty]: Start isEmpty. Operand 13708 states and 14891 transitions. [2020-10-13 09:19:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2020-10-13 09:19:53,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:53,155 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:19:53,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:19:53,156 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1551574574, now seen corresponding path program 1 times [2020-10-13 09:19:53,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:53,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680340989] [2020-10-13 09:19:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:53,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:53,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1083 [2020-10-13 09:19:58,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 09:19:58,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:19:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-13 09:19:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:58,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:58,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:58,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:58,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:58,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:19:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:19:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:19:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:19:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 09:19:58,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:19:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:59,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:19:59,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-13 09:19:59,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:19:59,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:59,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-13 09:19:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:59,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:19:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:19:59,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:19:59,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:59,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:19:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 368 proven. 386 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-10-13 09:20:00,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680340989] [2020-10-13 09:20:00,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:00,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:00,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813723402] [2020-10-13 09:20:00,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:00,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:00,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:00,065 INFO L87 Difference]: Start difference. First operand 13708 states and 14891 transitions. Second operand 7 states. [2020-10-13 09:20:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:05,555 INFO L93 Difference]: Finished difference Result 34418 states and 38194 transitions. [2020-10-13 09:20:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:05,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1065 [2020-10-13 09:20:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:05,616 INFO L225 Difference]: With dead ends: 34418 [2020-10-13 09:20:05,617 INFO L226 Difference]: Without dead ends: 20716 [2020-10-13 09:20:05,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20716 states. [2020-10-13 09:20:05,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20716 to 18113. [2020-10-13 09:20:05,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18113 states. [2020-10-13 09:20:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18113 states to 18113 states and 19543 transitions. [2020-10-13 09:20:05,959 INFO L78 Accepts]: Start accepts. Automaton has 18113 states and 19543 transitions. Word has length 1065 [2020-10-13 09:20:05,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:05,959 INFO L479 AbstractCegarLoop]: Abstraction has 18113 states and 19543 transitions. [2020-10-13 09:20:05,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18113 states and 19543 transitions. [2020-10-13 09:20:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2020-10-13 09:20:05,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:05,978 INFO L422 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:20:05,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:20:05,978 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:05,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1271196207, now seen corresponding path program 1 times [2020-10-13 09:20:05,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:05,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395963124] [2020-10-13 09:20:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:11,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:11,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1154 [2020-10-13 09:20:11,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:11,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 09:20:11,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:11,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:20:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:20:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:11,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:11,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:11,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:11,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:11,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:11,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:11,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:11,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:11,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 09:20:11,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:20:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:11,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:11,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:11,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:11,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:20:11,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:20:11,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:11,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:20:11,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:20:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:11,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:11,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:20:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:20:11,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:11,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:20:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:11,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-13 09:20:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:20:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-13 09:20:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:12,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:20:12,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:12,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:20:12,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:12,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:12,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:12,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 288 proven. 200 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2020-10-13 09:20:12,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395963124] [2020-10-13 09:20:12,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:12,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:12,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560576636] [2020-10-13 09:20:12,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:12,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:12,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:12,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:12,877 INFO L87 Difference]: Start difference. First operand 18113 states and 19543 transitions. Second operand 7 states. [2020-10-13 09:20:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:18,845 INFO L93 Difference]: Finished difference Result 38474 states and 42261 transitions. [2020-10-13 09:20:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:20:18,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1134 [2020-10-13 09:20:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:18,897 INFO L225 Difference]: With dead ends: 38474 [2020-10-13 09:20:18,898 INFO L226 Difference]: Without dead ends: 21055 [2020-10-13 09:20:18,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:20:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21055 states. [2020-10-13 09:20:19,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21055 to 20480. [2020-10-13 09:20:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20480 states. [2020-10-13 09:20:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20480 states to 20480 states and 21944 transitions. [2020-10-13 09:20:19,254 INFO L78 Accepts]: Start accepts. Automaton has 20480 states and 21944 transitions. Word has length 1134 [2020-10-13 09:20:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:19,255 INFO L479 AbstractCegarLoop]: Abstraction has 20480 states and 21944 transitions. [2020-10-13 09:20:19,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 20480 states and 21944 transitions. [2020-10-13 09:20:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2020-10-13 09:20:19,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:19,274 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:20:19,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:20:19,274 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:19,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:19,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1019853265, now seen corresponding path program 1 times [2020-10-13 09:20:19,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:19,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925631721] [2020-10-13 09:20:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1164 [2020-10-13 09:20:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:20:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 09:20:24,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 09:20:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:20:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-13 09:20:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:24,645 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-10-13 09:20:24,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:24,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:24,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:24,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:20:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:24,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:25,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:25,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:20:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-13 09:20:25,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 09:20:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:20:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:26,042 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 09:20:26,454 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-10-13 09:20:26,922 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-10-13 09:20:27,402 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2020-10-13 09:20:27,891 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2020-10-13 09:20:28,403 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 92 [2020-10-13 09:20:28,595 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-13 09:20:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:29,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:20:30,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:20:30,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:20:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:20:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:20:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:30,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 09:20:30,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:20:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:30,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:30,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:20:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 168 proven. 732 refuted. 0 times theorem prover too weak. 837 trivial. 0 not checked. [2020-10-13 09:20:36,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925631721] [2020-10-13 09:20:36,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:36,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 09:20:36,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524555605] [2020-10-13 09:20:36,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 09:20:36,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 09:20:36,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:20:36,545 INFO L87 Difference]: Start difference. First operand 20480 states and 21944 transitions. Second operand 13 states. [2020-10-13 09:20:36,938 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-13 09:20:38,261 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 54 [2020-10-13 09:20:39,090 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 56 [2020-10-13 09:20:39,759 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 62 [2020-10-13 09:20:40,620 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 61 [2020-10-13 09:20:41,355 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 60 [2020-10-13 09:20:42,022 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 63 [2020-10-13 09:20:43,353 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2020-10-13 09:20:44,088 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 71 [2020-10-13 09:20:44,733 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 78 [2020-10-13 09:20:45,553 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 77 [2020-10-13 09:20:46,212 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 75 [2020-10-13 09:20:46,801 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 92 [2020-10-13 09:20:47,859 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 106 [2020-10-13 09:20:48,474 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2020-10-13 09:20:50,659 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2020-10-13 09:20:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:50,808 INFO L93 Difference]: Finished difference Result 40959 states and 43903 transitions. [2020-10-13 09:20:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 09:20:50,809 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1146 [2020-10-13 09:20:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:50,845 INFO L225 Difference]: With dead ends: 40959 [2020-10-13 09:20:50,845 INFO L226 Difference]: Without dead ends: 20393 [2020-10-13 09:20:50,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2020-10-13 09:20:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20393 states. [2020-10-13 09:20:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20393 to 20389. [2020-10-13 09:20:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20389 states. [2020-10-13 09:20:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20389 states to 20389 states and 21853 transitions. [2020-10-13 09:20:51,144 INFO L78 Accepts]: Start accepts. Automaton has 20389 states and 21853 transitions. Word has length 1146 [2020-10-13 09:20:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:51,145 INFO L479 AbstractCegarLoop]: Abstraction has 20389 states and 21853 transitions. [2020-10-13 09:20:51,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 09:20:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 20389 states and 21853 transitions. [2020-10-13 09:20:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2020-10-13 09:20:51,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:51,173 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, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:51,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:20:51,174 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1372221883, now seen corresponding path program 1 times [2020-10-13 09:20:51,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:51,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077738029] [2020-10-13 09:20:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:51,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:51,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:54,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1368 [2020-10-13 09:20:56,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:20:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5265 [2020-10-13 09:20:56,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:20:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:20:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:56,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:56,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:56,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:56,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:56,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:56,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:20:56,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:20:56,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:56,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:20:56,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:56,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:20:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:20:57,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 09:20:57,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:20:57,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:20:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:20:57,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:20:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:20:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:20:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:20:57,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:20:57,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:20:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:20:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:20:57,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:20:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:57,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:20:57,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:20:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:57,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:57,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:57,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:20:57,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 427 proven. 605 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2020-10-13 09:20:58,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077738029] [2020-10-13 09:20:58,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:58,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:20:58,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004086314] [2020-10-13 09:20:58,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:20:58,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:58,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:20:58,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:20:58,862 INFO L87 Difference]: Start difference. First operand 20389 states and 21853 transitions. Second operand 8 states. [2020-10-13 09:21:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:04,374 INFO L93 Difference]: Finished difference Result 42542 states and 45778 transitions. [2020-10-13 09:21:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:21:04,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1346 [2020-10-13 09:21:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:04,423 INFO L225 Difference]: With dead ends: 42542 [2020-10-13 09:21:04,423 INFO L226 Difference]: Without dead ends: 22744 [2020-10-13 09:21:04,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:21:04,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22744 states. [2020-10-13 09:21:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22744 to 22070. [2020-10-13 09:21:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22070 states. [2020-10-13 09:21:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22070 states to 22070 states and 23503 transitions. [2020-10-13 09:21:04,682 INFO L78 Accepts]: Start accepts. Automaton has 22070 states and 23503 transitions. Word has length 1346 [2020-10-13 09:21:04,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:04,683 INFO L479 AbstractCegarLoop]: Abstraction has 22070 states and 23503 transitions. [2020-10-13 09:21:04,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:21:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 22070 states and 23503 transitions. [2020-10-13 09:21:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1564 [2020-10-13 09:21:04,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:04,716 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, 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, 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, 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, 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, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-13 09:21:04,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:21:04,716 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1293300150, now seen corresponding path program 1 times [2020-10-13 09:21:04,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:04,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141830420] [2020-10-13 09:21:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking...