/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:18:22,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:18:22,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:18:22,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:18:22,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:18:22,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:18:22,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:18:22,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:18:22,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:18:22,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:18:22,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:18:22,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:18:22,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:18:22,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:18:22,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:18:22,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:18:22,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:18:22,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:18:22,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:18:22,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:18:22,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:18:22,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:18:22,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:18:22,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:18:22,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:18:22,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:18:22,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:18:22,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:18:22,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:18:22,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:18:22,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:18:22,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:18:22,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:18:22,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:18:22,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:18:22,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:18:22,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:18:22,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:18:22,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:18:22,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:18:22,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:18:22,620 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 09:18:22,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:18:22,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:18:22,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:18:22,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:18:22,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:18:22,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:18:22,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:18:22,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:18:22,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:18:22,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:18:22,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:18:22,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:18:22,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:18:22,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:18:22,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:18:22,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:18:22,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:18:22,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:18:22,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:18:22,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:18:22,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:18:22,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:18:22,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:18:22,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:18:22,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:18:22,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:18:22,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:18:22,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:18:22,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:18:22,672 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 09:18:22,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:18:22,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:18:23,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:18:23,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:18:23,006 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:18:23,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label26.c [2020-10-13 09:18:23,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e023dc5/3cf95baf20fd49efb313ceb7555fdc35/FLAG030452f54 [2020-10-13 09:18:23,709 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:18:23,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label26.c [2020-10-13 09:18:23,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e023dc5/3cf95baf20fd49efb313ceb7555fdc35/FLAG030452f54 [2020-10-13 09:18:23,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e023dc5/3cf95baf20fd49efb313ceb7555fdc35 [2020-10-13 09:18:23,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:18:23,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:18:23,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:18:23,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:18:23,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:18:23,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:23" (1/1) ... [2020-10-13 09:18:23,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7468b030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:23, skipping insertion in model container [2020-10-13 09:18:23,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:23" (1/1) ... [2020-10-13 09:18:23,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:18:24,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:18:24,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:18:24,912 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:18:25,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:18:25,518 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:18:25,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25 WrapperNode [2020-10-13 09:18:25,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:18:25,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:18:25,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:18:25,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:18:25,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (1/1) ... [2020-10-13 09:18:25,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (1/1) ... [2020-10-13 09:18:25,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (1/1) ... [2020-10-13 09:18:25,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (1/1) ... [2020-10-13 09:18:25,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (1/1) ... [2020-10-13 09:18:25,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (1/1) ... [2020-10-13 09:18:25,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (1/1) ... [2020-10-13 09:18:25,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:18:25,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:18:25,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:18:25,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:18:25,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (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 09:18:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:18:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:18:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:18:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:18:25,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:18:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:18:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:18:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:18:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:18:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:18:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:18:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:18:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:18:28,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:18:28,273 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:18:28,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:28 BoogieIcfgContainer [2020-10-13 09:18:28,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:18:28,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:18:28,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:18:28,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:18:28,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:23" (1/3) ... [2020-10-13 09:18:28,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c961e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:28, skipping insertion in model container [2020-10-13 09:18:28,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:25" (2/3) ... [2020-10-13 09:18:28,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c961e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:28, skipping insertion in model container [2020-10-13 09:18:28,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:28" (3/3) ... [2020-10-13 09:18:28,290 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label26.c [2020-10-13 09:18:28,300 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:18:28,309 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:18:28,323 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:18:28,353 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:18:28,353 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:18:28,353 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:18:28,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:18:28,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:18:28,354 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:18:28,354 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:18:28,354 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:18:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:18:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 09:18:28,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:28,389 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] [2020-10-13 09:18:28,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1586905158, now seen corresponding path program 1 times [2020-10-13 09:18:28,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:28,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382758026] [2020-10-13 09:18:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:29,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 09:18:29,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:29,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-13 09:18:29,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:18:29,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:18:29,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 09:18:29,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:18:29,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:29,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:29,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:29,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:18:29,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:18:29,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:29,218 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 09:18:29,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382758026] [2020-10-13 09:18:29,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:18:29,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:18:29,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034825652] [2020-10-13 09:18:29,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:18:29,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:29,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:18:29,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:18:29,247 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:18:32,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:32,597 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-13 09:18:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:32,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-13 09:18:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:32,638 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:18:32,638 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:18:32,647 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 09:18:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:18:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-13 09:18:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-13 09:18:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-13 09:18:32,760 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 41 [2020-10-13 09:18:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:32,761 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-13 09:18:32,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:18:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-13 09:18:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 09:18:32,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:32,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:32,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:18:32,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:32,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1986652659, now seen corresponding path program 1 times [2020-10-13 09:18:32,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:32,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700953685] [2020-10-13 09:18:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:32,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:33,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 09:18:33,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:33,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-13 09:18:33,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:18:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:18:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:33,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:33,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:33,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:18:33,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:33,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:33,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:33,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:33,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:18:33,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:33,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:18:33,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:18:34,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700953685] [2020-10-13 09:18:34,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:34,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:18:34,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230005513] [2020-10-13 09:18:34,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:18:34,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:34,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:18:34,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:18:34,057 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 6 states. [2020-10-13 09:18:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:38,910 INFO L93 Difference]: Finished difference Result 2063 states and 3397 transitions. [2020-10-13 09:18:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:18:38,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-13 09:18:38,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:38,923 INFO L225 Difference]: With dead ends: 2063 [2020-10-13 09:18:38,924 INFO L226 Difference]: Without dead ends: 1380 [2020-10-13 09:18:38,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:18:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-13 09:18:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1376. [2020-10-13 09:18:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-13 09:18:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2064 transitions. [2020-10-13 09:18:39,009 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2064 transitions. Word has length 116 [2020-10-13 09:18:39,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:39,013 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 2064 transitions. [2020-10-13 09:18:39,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:18:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2064 transitions. [2020-10-13 09:18:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-13 09:18:39,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:39,026 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:18:39,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:18:39,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:39,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1983026173, now seen corresponding path program 1 times [2020-10-13 09:18:39,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:39,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076783933] [2020-10-13 09:18:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:40,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:41,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:43,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:18:43,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:18:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4421 [2020-10-13 09:18:43,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-13 09:18:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:18:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:43,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:43,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:43,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:43,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:18:43,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:43,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:43,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:43,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:43,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:18:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:43,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:43,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:18:43,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:43,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:18:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:43,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:18:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 09:18:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:18:43,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076783933] [2020-10-13 09:18:43,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:43,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:18:43,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008187418] [2020-10-13 09:18:43,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:18:43,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:43,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:18:43,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:18:43,969 INFO L87 Difference]: Start difference. First operand 1376 states and 2064 transitions. Second operand 5 states. [2020-10-13 09:18:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:18:47,594 INFO L93 Difference]: Finished difference Result 3776 states and 5761 transitions. [2020-10-13 09:18:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:18:47,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-13 09:18:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:18:47,614 INFO L225 Difference]: With dead ends: 3776 [2020-10-13 09:18:47,615 INFO L226 Difference]: Without dead ends: 2406 [2020-10-13 09:18:47,619 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 09:18:47,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2020-10-13 09:18:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2402. [2020-10-13 09:18:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2402 states. [2020-10-13 09:18:47,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3444 transitions. [2020-10-13 09:18:47,699 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3444 transitions. Word has length 226 [2020-10-13 09:18:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:18:47,702 INFO L479 AbstractCegarLoop]: Abstraction has 2402 states and 3444 transitions. [2020-10-13 09:18:47,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:18:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3444 transitions. [2020-10-13 09:18:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-13 09:18:47,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:18:47,710 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:18:47,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:18:47,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:18:47,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:18:47,711 INFO L82 PathProgramCache]: Analyzing trace with hash -124319670, now seen corresponding path program 1 times [2020-10-13 09:18:47,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:18:47,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852481741] [2020-10-13 09:18:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:18:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:47,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-13 09:18:52,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:18:52,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:18:52,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:18:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:18:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:18:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:18:52,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:18:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:52,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:52,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:52,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:18:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:52,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:52,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:18:52,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:18:52,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:18:52,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:18:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:18:52,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 09:18:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:53,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:53,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:18:53,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:18:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-13 09:18:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:18:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:18:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:18:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-13 09:18:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:18:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:18:53,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:18:53,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:18:53,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:18:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:18:53,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:18:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:18:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:18:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:18:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:18:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 178 proven. 106 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-13 09:18:54,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852481741] [2020-10-13 09:18:54,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:18:54,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:18:54,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832190080] [2020-10-13 09:18:54,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:18:54,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:18:54,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:18:54,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:18:54,641 INFO L87 Difference]: Start difference. First operand 2402 states and 3444 transitions. Second operand 7 states. [2020-10-13 09:19:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:01,052 INFO L93 Difference]: Finished difference Result 4958 states and 7136 transitions. [2020-10-13 09:19:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:19:01,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-13 09:19:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:01,069 INFO L225 Difference]: With dead ends: 4958 [2020-10-13 09:19:01,070 INFO L226 Difference]: Without dead ends: 2489 [2020-10-13 09:19:01,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-10-13 09:19:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2406. [2020-10-13 09:19:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2406 states. [2020-10-13 09:19:01,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 3178 transitions. [2020-10-13 09:19:01,155 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 3178 transitions. Word has length 333 [2020-10-13 09:19:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:01,155 INFO L479 AbstractCegarLoop]: Abstraction has 2406 states and 3178 transitions. [2020-10-13 09:19:01,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 3178 transitions. [2020-10-13 09:19:01,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-13 09:19:01,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:01,162 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:01,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:19:01,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:01,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:01,163 INFO L82 PathProgramCache]: Analyzing trace with hash 416825814, now seen corresponding path program 1 times [2020-10-13 09:19:01,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:01,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371659085] [2020-10-13 09:19:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:06,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-13 09:19:06,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:19:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:19:06,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:06,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:19:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:19:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:06,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:06,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:06,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:06,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:06,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:06,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:06,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:06,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:06,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:19:06,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:19:06,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:19:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 09:19:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 09:19:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-13 09:19:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:06,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:06,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:06,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:06,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:19:06,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:19:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 188 proven. 106 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:19:06,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371659085] [2020-10-13 09:19:06,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:06,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:06,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28817791] [2020-10-13 09:19:06,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:06,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:06,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:06,863 INFO L87 Difference]: Start difference. First operand 2406 states and 3178 transitions. Second operand 7 states. [2020-10-13 09:19:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:10,533 INFO L93 Difference]: Finished difference Result 4967 states and 6725 transitions. [2020-10-13 09:19:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:19:10,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-13 09:19:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:10,550 INFO L225 Difference]: With dead ends: 4967 [2020-10-13 09:19:10,550 INFO L226 Difference]: Without dead ends: 2490 [2020-10-13 09:19:10,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:19:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2020-10-13 09:19:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2071. [2020-10-13 09:19:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2020-10-13 09:19:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2703 transitions. [2020-10-13 09:19:10,647 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2703 transitions. Word has length 343 [2020-10-13 09:19:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:10,648 INFO L479 AbstractCegarLoop]: Abstraction has 2071 states and 2703 transitions. [2020-10-13 09:19:10,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:10,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2703 transitions. [2020-10-13 09:19:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-13 09:19:10,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:10,655 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:10,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:19:10,655 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:10,656 INFO L82 PathProgramCache]: Analyzing trace with hash 308855822, now seen corresponding path program 1 times [2020-10-13 09:19:10,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:10,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467872067] [2020-10-13 09:19:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:11,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-13 09:19:15,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:15,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 09:19:15,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:15,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 09:19:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:19:15,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:15,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:15,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:19:15,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:19:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:19:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:15,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 09:19:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:16,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-13 09:19:16,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:16,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:16,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-13 09:19:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:16,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:16,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:16,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:16,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:16,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:19:16,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:16,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:16,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:19:16,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:16,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 192 proven. 106 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-13 09:19:16,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467872067] [2020-10-13 09:19:16,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:16,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:19:16,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744912258] [2020-10-13 09:19:16,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:19:16,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:16,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:19:16,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:19:16,635 INFO L87 Difference]: Start difference. First operand 2071 states and 2703 transitions. Second operand 6 states. [2020-10-13 09:19:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:19,478 INFO L93 Difference]: Finished difference Result 4269 states and 5561 transitions. [2020-10-13 09:19:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:19:19,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 347 [2020-10-13 09:19:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:19,496 INFO L225 Difference]: With dead ends: 4269 [2020-10-13 09:19:19,497 INFO L226 Difference]: Without dead ends: 2135 [2020-10-13 09:19:19,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:19:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2020-10-13 09:19:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 2068. [2020-10-13 09:19:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-13 09:19:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2534 transitions. [2020-10-13 09:19:19,556 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2534 transitions. Word has length 347 [2020-10-13 09:19:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:19,556 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2534 transitions. [2020-10-13 09:19:19,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:19:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2534 transitions. [2020-10-13 09:19:19,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-13 09:19:19,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:19,563 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:19:19,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:19:19,564 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:19,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:19,565 INFO L82 PathProgramCache]: Analyzing trace with hash 411126850, now seen corresponding path program 1 times [2020-10-13 09:19:19,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:19,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365034787] [2020-10-13 09:19:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:24,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:24,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 09:19:24,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:19:24,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:19:24,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:19:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:19:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:19:24,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:24,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:24,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:24,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:24,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:24,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:24,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:24,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:24,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:24,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:19:24,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:19:24,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:24,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:19:24,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:19:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:24,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:25,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:19:25,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 09:19:25,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:25,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:19:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:19:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 09:19:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:25,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:25,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:19:25,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:19:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 213 proven. 106 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 09:19:25,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365034787] [2020-10-13 09:19:25,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:25,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:19:25,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198617438] [2020-10-13 09:19:25,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:19:25,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:19:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:19:25,173 INFO L87 Difference]: Start difference. First operand 2068 states and 2534 transitions. Second operand 7 states. [2020-10-13 09:19:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:28,477 INFO L93 Difference]: Finished difference Result 4491 states and 5481 transitions. [2020-10-13 09:19:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:19:28,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-13 09:19:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:28,487 INFO L225 Difference]: With dead ends: 4491 [2020-10-13 09:19:28,487 INFO L226 Difference]: Without dead ends: 2081 [2020-10-13 09:19:28,493 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 09:19:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2020-10-13 09:19:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2068. [2020-10-13 09:19:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-13 09:19:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2473 transitions. [2020-10-13 09:19:28,545 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2473 transitions. Word has length 369 [2020-10-13 09:19:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:28,545 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2473 transitions. [2020-10-13 09:19:28,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:19:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2473 transitions. [2020-10-13 09:19:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-13 09:19:28,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:28,553 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:19:28,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:19:28,554 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:28,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1996841350, now seen corresponding path program 1 times [2020-10-13 09:19:28,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:28,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89196478] [2020-10-13 09:19:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:28,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:28,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:31,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:33,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-13 09:19:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 09:19:33,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-13 09:19:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:19:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:33,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:33,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:33,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:33,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:33,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:33,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:33,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:19:33,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:19:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:33,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:33,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:19:33,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:33,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:33,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:19:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:33,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:33,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 09:19:33,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:33,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:19:33,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:33,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:33,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 09:19:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2020-10-13 09:19:33,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89196478] [2020-10-13 09:19:33,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:33,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:33,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034457524] [2020-10-13 09:19:33,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:33,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:33,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:33,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:33,931 INFO L87 Difference]: Start difference. First operand 2068 states and 2473 transitions. Second operand 5 states. [2020-10-13 09:19:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:35,701 INFO L93 Difference]: Finished difference Result 4153 states and 4986 transitions. [2020-10-13 09:19:35,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:35,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 373 [2020-10-13 09:19:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:35,714 INFO L225 Difference]: With dead ends: 4153 [2020-10-13 09:19:35,714 INFO L226 Difference]: Without dead ends: 2077 [2020-10-13 09:19:35,719 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 09:19:35,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-13 09:19:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2068. [2020-10-13 09:19:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-13 09:19:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2469 transitions. [2020-10-13 09:19:35,767 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2469 transitions. Word has length 373 [2020-10-13 09:19:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:35,767 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2469 transitions. [2020-10-13 09:19:35,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2469 transitions. [2020-10-13 09:19:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-13 09:19:35,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:35,772 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:19:35,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:19:35,773 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:35,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:35,773 INFO L82 PathProgramCache]: Analyzing trace with hash 624210975, now seen corresponding path program 1 times [2020-10-13 09:19:35,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:35,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095129200] [2020-10-13 09:19:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:35,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:40,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:40,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-13 09:19:40,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:40,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 09:19:40,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:40,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 363 [2020-10-13 09:19:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:19:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:40,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:40,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:40,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:40,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:40,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:19:40,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:40,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:40,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:40,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:40,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:40,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:40,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:40,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:19:40,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:40,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:40,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:41,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:19:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:41,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:41,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:41,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:19:41,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:19:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:41,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 09:19:41,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-13 09:19:41,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095129200] [2020-10-13 09:19:41,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:41,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:41,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543004600] [2020-10-13 09:19:41,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:41,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:41,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:41,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:41,245 INFO L87 Difference]: Start difference. First operand 2068 states and 2469 transitions. Second operand 5 states. [2020-10-13 09:19:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:43,124 INFO L93 Difference]: Finished difference Result 4165 states and 4988 transitions. [2020-10-13 09:19:43,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:43,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2020-10-13 09:19:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:43,133 INFO L225 Difference]: With dead ends: 4165 [2020-10-13 09:19:43,133 INFO L226 Difference]: Without dead ends: 2077 [2020-10-13 09:19:43,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:19:43,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-13 09:19:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2068. [2020-10-13 09:19:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-13 09:19:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2467 transitions. [2020-10-13 09:19:43,181 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2467 transitions. Word has length 390 [2020-10-13 09:19:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:43,182 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2467 transitions. [2020-10-13 09:19:43,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2467 transitions. [2020-10-13 09:19:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-13 09:19:43,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:43,187 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:43,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:19:43,187 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:43,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:43,188 INFO L82 PathProgramCache]: Analyzing trace with hash 544768158, now seen corresponding path program 1 times [2020-10-13 09:19:43,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:43,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595510503] [2020-10-13 09:19:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:43,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:44,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-13 09:19:48,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:19:48,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 412 [2020-10-13 09:19:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:19:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:48,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:48,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:48,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:19:48,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:19:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:48,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:19:48,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:19:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 09:19:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-13 09:19:48,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595510503] [2020-10-13 09:19:48,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:48,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:48,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844579700] [2020-10-13 09:19:48,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:48,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:48,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:48,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:48,669 INFO L87 Difference]: Start difference. First operand 2068 states and 2467 transitions. Second operand 5 states. [2020-10-13 09:19:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:50,517 INFO L93 Difference]: Finished difference Result 4168 states and 4987 transitions. [2020-10-13 09:19:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:50,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 439 [2020-10-13 09:19:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:50,526 INFO L225 Difference]: With dead ends: 4168 [2020-10-13 09:19:50,526 INFO L226 Difference]: Without dead ends: 2077 [2020-10-13 09:19:50,531 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 09:19:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-13 09:19:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2068. [2020-10-13 09:19:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-13 09:19:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2465 transitions. [2020-10-13 09:19:50,571 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2465 transitions. Word has length 439 [2020-10-13 09:19:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:50,571 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2465 transitions. [2020-10-13 09:19:50,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2465 transitions. [2020-10-13 09:19:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-13 09:19:50,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:50,576 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:50,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:19:50,577 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:50,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1557763650, now seen corresponding path program 1 times [2020-10-13 09:19:50,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:50,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500352994] [2020-10-13 09:19:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:50,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:51,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-13 09:19:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:19:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 09:19:55,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:19:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-13 09:19:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:19:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:19:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:19:55,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:19:55,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:19:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:19:55,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:19:55,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:19:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:19:55,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:19:55,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:19:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:19:55,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:55,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:19:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:55,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-13 09:19:55,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:19:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-13 09:19:56,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500352994] [2020-10-13 09:19:56,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:19:56,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:19:56,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032175554] [2020-10-13 09:19:56,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:19:56,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:19:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:19:56,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:19:56,015 INFO L87 Difference]: Start difference. First operand 2068 states and 2465 transitions. Second operand 5 states. [2020-10-13 09:19:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:19:57,789 INFO L93 Difference]: Finished difference Result 4152 states and 4969 transitions. [2020-10-13 09:19:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:19:57,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 441 [2020-10-13 09:19:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:19:57,796 INFO L225 Difference]: With dead ends: 4152 [2020-10-13 09:19:57,797 INFO L226 Difference]: Without dead ends: 2077 [2020-10-13 09:19:57,801 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 09:19:57,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-13 09:19:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2068. [2020-10-13 09:19:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-13 09:19:57,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2461 transitions. [2020-10-13 09:19:57,843 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2461 transitions. Word has length 441 [2020-10-13 09:19:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:19:57,844 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2461 transitions. [2020-10-13 09:19:57,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:19:57,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2461 transitions. [2020-10-13 09:19:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-13 09:19:57,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:19:57,850 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:57,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:19:57,850 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:19:57,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:19:57,851 INFO L82 PathProgramCache]: Analyzing trace with hash 571880955, now seen corresponding path program 1 times [2020-10-13 09:19:57,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:19:57,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499567652] [2020-10-13 09:19:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:19:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:19:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:19:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:02,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:02,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-13 09:20:02,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 09:20:02,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 457 [2020-10-13 09:20:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 09:20:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:03,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:03,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:20:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:03,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:20:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:20:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:03,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:03,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-13 09:20:03,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:03,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:20:03,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-13 09:20:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 3 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-10-13 09:20:03,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499567652] [2020-10-13 09:20:03,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:03,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:20:03,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915810503] [2020-10-13 09:20:03,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:20:03,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:03,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:20:03,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:20:03,444 INFO L87 Difference]: Start difference. First operand 2068 states and 2461 transitions. Second operand 5 states. [2020-10-13 09:20:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:05,274 INFO L93 Difference]: Finished difference Result 4156 states and 4965 transitions. [2020-10-13 09:20:05,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:20:05,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 484 [2020-10-13 09:20:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:05,281 INFO L225 Difference]: With dead ends: 4156 [2020-10-13 09:20:05,281 INFO L226 Difference]: Without dead ends: 2077 [2020-10-13 09:20:05,286 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 09:20:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2020-10-13 09:20:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2068. [2020-10-13 09:20:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-13 09:20:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2457 transitions. [2020-10-13 09:20:05,328 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2457 transitions. Word has length 484 [2020-10-13 09:20:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:05,329 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2457 transitions. [2020-10-13 09:20:05,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:20:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2457 transitions. [2020-10-13 09:20:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-10-13 09:20:05,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:05,337 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:05,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:20:05,337 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:05,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1741079485, now seen corresponding path program 1 times [2020-10-13 09:20:05,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:05,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926591145] [2020-10-13 09:20:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:06,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:10,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:20:10,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:10,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:10,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:10,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:10,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:10,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:10,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:10,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:10,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:20:10,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:10,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 09:20:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 09:20:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:20:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:10,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 09:20:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:10,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:10,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:20:10,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:20:10,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:20:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 213 proven. 109 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 09:20:11,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926591145] [2020-10-13 09:20:11,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:11,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:20:11,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010745476] [2020-10-13 09:20:11,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:20:11,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:11,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:20:11,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:20:11,156 INFO L87 Difference]: Start difference. First operand 2068 states and 2457 transitions. Second operand 8 states. [2020-10-13 09:20:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:14,101 INFO L93 Difference]: Finished difference Result 5905 states and 7205 transitions. [2020-10-13 09:20:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:14,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 552 [2020-10-13 09:20:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:14,116 INFO L225 Difference]: With dead ends: 5905 [2020-10-13 09:20:14,116 INFO L226 Difference]: Without dead ends: 3843 [2020-10-13 09:20:14,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:20:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2020-10-13 09:20:14,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3815. [2020-10-13 09:20:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3815 states. [2020-10-13 09:20:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 4562 transitions. [2020-10-13 09:20:14,198 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 4562 transitions. Word has length 552 [2020-10-13 09:20:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:14,199 INFO L479 AbstractCegarLoop]: Abstraction has 3815 states and 4562 transitions. [2020-10-13 09:20:14,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:20:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 4562 transitions. [2020-10-13 09:20:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-13 09:20:14,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:14,211 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:20:14,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:20:14,211 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash 565802663, now seen corresponding path program 1 times [2020-10-13 09:20:14,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:14,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118740911] [2020-10-13 09:20:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 796 [2020-10-13 09:20:19,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:20:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:20:19,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:20:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:20:19,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:20:19,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:19,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:20:19,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:20:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:20:19,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:20:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:20:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:20:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:19,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:20:19,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:20:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-13 09:20:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:20:19,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:20:19,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 09:20:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-13 09:20:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-13 09:20:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:19,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:20:19,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:20:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:19,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:19,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:19,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:19,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:19,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:20:19,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 170 proven. 256 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-10-13 09:20:20,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118740911] [2020-10-13 09:20:20,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:20,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:20,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456031519] [2020-10-13 09:20:20,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:20,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:20,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:20,043 INFO L87 Difference]: Start difference. First operand 3815 states and 4562 transitions. Second operand 7 states. [2020-10-13 09:20:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:23,095 INFO L93 Difference]: Finished difference Result 8330 states and 9975 transitions. [2020-10-13 09:20:23,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:20:23,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 776 [2020-10-13 09:20:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:23,111 INFO L225 Difference]: With dead ends: 8330 [2020-10-13 09:20:23,111 INFO L226 Difference]: Without dead ends: 4521 [2020-10-13 09:20:23,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 09:20:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2020-10-13 09:20:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4497. [2020-10-13 09:20:23,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4497 states. [2020-10-13 09:20:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5220 transitions. [2020-10-13 09:20:23,203 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5220 transitions. Word has length 776 [2020-10-13 09:20:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:23,204 INFO L479 AbstractCegarLoop]: Abstraction has 4497 states and 5220 transitions. [2020-10-13 09:20:23,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:23,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5220 transitions. [2020-10-13 09:20:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-10-13 09:20:23,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:23,221 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:20:23,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:20:23,221 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash 41207086, now seen corresponding path program 1 times [2020-10-13 09:20:23,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:23,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714292998] [2020-10-13 09:20:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:28,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-13 09:20:28,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 09:20:28,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 09:20:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:20:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:28,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:28,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:28,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:20:28,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 09:20:28,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:28,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-13 09:20:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-13 09:20:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:28,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:20:28,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 09:20:28,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:20:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-13 09:20:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:28,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:28,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:20:28,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:20:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-10-13 09:20:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:28,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:28,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:20:28,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:20:28,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 09:20:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:28,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-10-13 09:20:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:29,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:20:29,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:20:29,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 09:20:29,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:29,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2020-10-13 09:20:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:29,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:29,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:20:29,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:20:29,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:29,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:29,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:29,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:29,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:29,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:20:29,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 286 proven. 266 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2020-10-13 09:20:29,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714292998] [2020-10-13 09:20:29,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:29,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:29,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367426800] [2020-10-13 09:20:29,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:29,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:29,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:29,586 INFO L87 Difference]: Start difference. First operand 4497 states and 5220 transitions. Second operand 7 states. [2020-10-13 09:20:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:32,780 INFO L93 Difference]: Finished difference Result 11074 states and 12956 transitions. [2020-10-13 09:20:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:32,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 995 [2020-10-13 09:20:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:32,800 INFO L225 Difference]: With dead ends: 11074 [2020-10-13 09:20:32,801 INFO L226 Difference]: Without dead ends: 6583 [2020-10-13 09:20:32,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:20:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2020-10-13 09:20:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6563. [2020-10-13 09:20:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6563 states. [2020-10-13 09:20:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6563 states to 6563 states and 7478 transitions. [2020-10-13 09:20:32,925 INFO L78 Accepts]: Start accepts. Automaton has 6563 states and 7478 transitions. Word has length 995 [2020-10-13 09:20:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:32,926 INFO L479 AbstractCegarLoop]: Abstraction has 6563 states and 7478 transitions. [2020-10-13 09:20:32,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 6563 states and 7478 transitions. [2020-10-13 09:20:32,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2020-10-13 09:20:32,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:32,948 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 09:20:32,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:20:32,948 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:32,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:32,949 INFO L82 PathProgramCache]: Analyzing trace with hash 233790831, now seen corresponding path program 1 times [2020-10-13 09:20:32,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:32,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986802408] [2020-10-13 09:20:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:34,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1066 [2020-10-13 09:20:38,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:20:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 09:20:38,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 330 [2020-10-13 09:20:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:20:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:38,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:20:38,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:20:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:20:38,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:20:38,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:20:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:38,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:20:38,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:20:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:20:38,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-10-13 09:20:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:38,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:38,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 09:20:38,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:38,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2020-10-13 09:20:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:39,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:39,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 09:20:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 09:20:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-13 09:20:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:20:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:39,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:39,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:39,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 09:20:39,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:20:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:39,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1562 backedges. 369 proven. 226 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-13 09:20:39,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986802408] [2020-10-13 09:20:39,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:39,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:39,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935259883] [2020-10-13 09:20:39,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:39,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:39,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:39,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:39,765 INFO L87 Difference]: Start difference. First operand 6563 states and 7478 transitions. Second operand 7 states. [2020-10-13 09:20:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:43,186 INFO L93 Difference]: Finished difference Result 14837 states and 17059 transitions. [2020-10-13 09:20:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:20:43,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1046 [2020-10-13 09:20:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:43,216 INFO L225 Difference]: With dead ends: 14837 [2020-10-13 09:20:43,216 INFO L226 Difference]: Without dead ends: 8280 [2020-10-13 09:20:43,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 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 09:20:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2020-10-13 09:20:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8266. [2020-10-13 09:20:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8266 states. [2020-10-13 09:20:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 9175 transitions. [2020-10-13 09:20:43,396 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 9175 transitions. Word has length 1046 [2020-10-13 09:20:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:43,397 INFO L479 AbstractCegarLoop]: Abstraction has 8266 states and 9175 transitions. [2020-10-13 09:20:43,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:43,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 9175 transitions. [2020-10-13 09:20:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2020-10-13 09:20:43,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:43,440 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-13 09:20:43,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:20:43,440 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:43,441 INFO L82 PathProgramCache]: Analyzing trace with hash -14256998, now seen corresponding path program 1 times [2020-10-13 09:20:43,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:43,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711240543] [2020-10-13 09:20:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:47,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1473 [2020-10-13 09:20:48,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:20:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 09:20:48,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:20:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:20:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:20:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:48,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:48,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:20:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:20:48,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:20:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:20:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:20:49,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:20:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:20:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:20:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:20:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:20:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:49,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-13 09:20:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:20:49,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:20:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:20:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2020-10-13 09:20:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:20:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:20:49,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:20:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2020-10-13 09:20:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 967 [2020-10-13 09:20:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1132 [2020-10-13 09:20:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:49,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:49,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:20:49,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:20:49,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:20:49,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:20:49,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:20:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:20:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:20:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:20:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:20:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3417 backedges. 325 proven. 337 refuted. 0 times theorem prover too weak. 2755 trivial. 0 not checked. [2020-10-13 09:20:50,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711240543] [2020-10-13 09:20:50,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:20:50,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:20:50,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958684073] [2020-10-13 09:20:50,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:20:50,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:20:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:20:50,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:20:50,684 INFO L87 Difference]: Start difference. First operand 8266 states and 9175 transitions. Second operand 7 states. [2020-10-13 09:20:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:20:54,917 INFO L93 Difference]: Finished difference Result 22469 states and 25803 transitions. [2020-10-13 09:20:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:20:54,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1451 [2020-10-13 09:20:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:20:54,968 INFO L225 Difference]: With dead ends: 22469 [2020-10-13 09:20:54,969 INFO L226 Difference]: Without dead ends: 14209 [2020-10-13 09:20:54,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:20:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14209 states. [2020-10-13 09:20:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14209 to 13363. [2020-10-13 09:20:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13363 states. [2020-10-13 09:20:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13363 states to 13363 states and 14715 transitions. [2020-10-13 09:20:55,275 INFO L78 Accepts]: Start accepts. Automaton has 13363 states and 14715 transitions. Word has length 1451 [2020-10-13 09:20:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:20:55,276 INFO L479 AbstractCegarLoop]: Abstraction has 13363 states and 14715 transitions. [2020-10-13 09:20:55,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:20:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 13363 states and 14715 transitions. [2020-10-13 09:20:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2020-10-13 09:20:55,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:20:55,328 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:20:55,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:20:55,328 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:20:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:20:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash -921016238, now seen corresponding path program 1 times [2020-10-13 09:20:55,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:20:55,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149726441] [2020-10-13 09:20:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:20:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:20:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:57,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:20:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:00,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1501 [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:21:00,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:00,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:00,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:00,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:00,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:00,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:00,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:00,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:00,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:00,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 09:21:00,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:00,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:21:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:00,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:21:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:21:01,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 09:21:01,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:21:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-13 09:21:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:21:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:21:01,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:21:01,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:21:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:01,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:21:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2020-10-13 09:21:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:21:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-13 09:21:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:21:01,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:21:01,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:21:01,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:01,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1160 [2020-10-13 09:21:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:01,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:01,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3556 backedges. 324 proven. 332 refuted. 0 times theorem prover too weak. 2900 trivial. 0 not checked. [2020-10-13 09:21:02,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149726441] [2020-10-13 09:21:02,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:02,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:02,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744322818] [2020-10-13 09:21:02,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:02,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:02,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:02,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:02,698 INFO L87 Difference]: Start difference. First operand 13363 states and 14715 transitions. Second operand 7 states. [2020-10-13 09:21:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:06,618 INFO L93 Difference]: Finished difference Result 28078 states and 31042 transitions. [2020-10-13 09:21:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:21:06,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1479 [2020-10-13 09:21:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:06,649 INFO L225 Difference]: With dead ends: 28078 [2020-10-13 09:21:06,650 INFO L226 Difference]: Without dead ends: 15058 [2020-10-13 09:21:06,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:21:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15058 states. [2020-10-13 09:21:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15058 to 15056. [2020-10-13 09:21:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15056 states. [2020-10-13 09:21:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15056 states to 15056 states and 16431 transitions. [2020-10-13 09:21:06,960 INFO L78 Accepts]: Start accepts. Automaton has 15056 states and 16431 transitions. Word has length 1479 [2020-10-13 09:21:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:06,961 INFO L479 AbstractCegarLoop]: Abstraction has 15056 states and 16431 transitions. [2020-10-13 09:21:06,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 15056 states and 16431 transitions. [2020-10-13 09:21:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1543 [2020-10-13 09:21:07,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:07,026 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, 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2020-10-13 09:21:07,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:21:07,027 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:07,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:07,028 INFO L82 PathProgramCache]: Analyzing trace with hash 248767063, now seen corresponding path program 1 times [2020-10-13 09:21:07,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:07,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869042435] [2020-10-13 09:21:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:12,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:12,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1562 [2020-10-13 09:21:12,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:21:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:21:12,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 09:21:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:21:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-13 09:21:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:12,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:12,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:12,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:12,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:21:12,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:21:12,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:13,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:13,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:21:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-13 09:21:13,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 09:21:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:21:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:14,155 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-10-13 09:21:14,380 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-10-13 09:21:14,609 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-13 09:21:14,864 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-10-13 09:21:15,120 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-13 09:21:15,384 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-13 09:21:16,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:21:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:16,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:16,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:16,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:21:16,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:21:16,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:16,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:21:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:16,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:16,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:21:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 806 [2020-10-13 09:21:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:16,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:16,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:21:16,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-13 09:21:16,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:21:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:21:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1058 [2020-10-13 09:21:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:16,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:16,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:21:16,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:21:16,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:21:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:16,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1223 [2020-10-13 09:21:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:17,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:17,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:21:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:21:17,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:21:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:17,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3603 backedges. 204 proven. 1136 refuted. 0 times theorem prover too weak. 2263 trivial. 0 not checked. [2020-10-13 09:21:22,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869042435] [2020-10-13 09:21:22,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:22,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 09:21:22,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760288360] [2020-10-13 09:21:22,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 09:21:22,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:22,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 09:21:22,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:21:22,723 INFO L87 Difference]: Start difference. First operand 15056 states and 16431 transitions. Second operand 13 states. [2020-10-13 09:21:23,112 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-13 09:21:24,235 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-13 09:21:24,842 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-10-13 09:21:25,336 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-10-13 09:21:25,959 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-13 09:21:26,574 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-10-13 09:21:27,049 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2020-10-13 09:21:28,173 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-13 09:21:28,650 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-13 09:21:28,964 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-13 09:21:29,399 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-13 09:21:29,865 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-13 09:21:30,173 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 83 [2020-10-13 09:21:30,829 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-10-13 09:21:32,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:32,380 INFO L93 Difference]: Finished difference Result 30111 states and 32883 transitions. [2020-10-13 09:21:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 09:21:32,381 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1542 [2020-10-13 09:21:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:32,408 INFO L225 Difference]: With dead ends: 30111 [2020-10-13 09:21:32,408 INFO L226 Difference]: Without dead ends: 14969 [2020-10-13 09:21:32,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-13 09:21:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14969 states. [2020-10-13 09:21:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14969 to 14967. [2020-10-13 09:21:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14967 states. [2020-10-13 09:21:32,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14967 states to 14967 states and 16350 transitions. [2020-10-13 09:21:32,620 INFO L78 Accepts]: Start accepts. Automaton has 14967 states and 16350 transitions. Word has length 1542 [2020-10-13 09:21:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:32,621 INFO L479 AbstractCegarLoop]: Abstraction has 14967 states and 16350 transitions. [2020-10-13 09:21:32,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 09:21:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 14967 states and 16350 transitions. [2020-10-13 09:21:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1743 [2020-10-13 09:21:32,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:32,696 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:21:32,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 09:21:32,697 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:32,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:32,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1448203293, now seen corresponding path program 1 times [2020-10-13 09:21:32,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:32,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569166279] [2020-10-13 09:21:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:38,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1766 [2020-10-13 09:21:38,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:21:38,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5313 [2020-10-13 09:21:38,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:21:38,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:21:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:38,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:38,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:38,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:38,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:38,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:38,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:38,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:38,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:21:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:38,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:21:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:38,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:21:38,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:38,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:21:38,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:21:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:21:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:38,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:21:38,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:21:38,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:21:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:21:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:38,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:38,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:21:38,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:21:38,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:21:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:21:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:39,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:39,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:21:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-13 09:21:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:39,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 09:21:39,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:39,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:21:39,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:21:39,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1258 [2020-10-13 09:21:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:39,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:21:39,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:21:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:21:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:39,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1423 [2020-10-13 09:21:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:39,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:39,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:39,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:21:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 09:21:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:21:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:21:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5246 backedges. 455 proven. 923 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2020-10-13 09:21:41,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569166279] [2020-10-13 09:21:41,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:41,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:41,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815660442] [2020-10-13 09:21:41,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:41,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:41,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:41,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:41,609 INFO L87 Difference]: Start difference. First operand 14967 states and 16350 transitions. Second operand 7 states. [2020-10-13 09:21:45,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:45,554 INFO L93 Difference]: Finished difference Result 30364 states and 33325 transitions. [2020-10-13 09:21:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:21:45,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1742 [2020-10-13 09:21:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:45,587 INFO L225 Difference]: With dead ends: 30364 [2020-10-13 09:21:45,587 INFO L226 Difference]: Without dead ends: 15647 [2020-10-13 09:21:45,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:21:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15647 states. [2020-10-13 09:21:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15647 to 15645. [2020-10-13 09:21:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15645 states. [2020-10-13 09:21:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15645 states to 15645 states and 16977 transitions. [2020-10-13 09:21:45,848 INFO L78 Accepts]: Start accepts. Automaton has 15645 states and 16977 transitions. Word has length 1742 [2020-10-13 09:21:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:45,849 INFO L479 AbstractCegarLoop]: Abstraction has 15645 states and 16977 transitions. [2020-10-13 09:21:45,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 15645 states and 16977 transitions. [2020-10-13 09:21:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1845 [2020-10-13 09:21:45,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:45,901 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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, 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, 3, 3, 3, 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] [2020-10-13 09:21:45,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 09:21:45,902 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:45,903 INFO L82 PathProgramCache]: Analyzing trace with hash 832021091, now seen corresponding path program 1 times [2020-10-13 09:21:45,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:45,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653003253] [2020-10-13 09:21:45,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:21:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:46,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:51,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:51,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1868 [2020-10-13 09:21:51,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:21:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 09:21:51,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:21:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-13 09:21:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:21:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:51,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:51,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:21:51,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:21:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:21:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:51,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:51,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:21:51,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:51,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:21:51,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:21:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:21:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:51,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-13 09:21:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:21:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 09:21:51,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:21:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:21:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-13 09:21:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-13 09:21:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:52,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:52,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-13 09:21:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:52,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:52,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-13 09:21:52,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:21:52,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-13 09:21:52,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:52,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-13 09:21:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:21:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:52,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:52,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:21:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:21:52,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:21:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:52,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1360 [2020-10-13 09:21:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:52,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:52,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 09:21:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:21:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-13 09:21:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:52,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1525 [2020-10-13 09:21:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:21:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:21:52,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:21:52,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:21:52,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:21:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:21:52,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:21:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:21:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:21:52,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:21:52,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:21:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5116 backedges. 502 proven. 1148 refuted. 0 times theorem prover too weak. 3466 trivial. 0 not checked. [2020-10-13 09:21:54,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653003253] [2020-10-13 09:21:54,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:21:54,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:21:54,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716999809] [2020-10-13 09:21:54,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:21:54,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:21:54,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:21:54,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:21:54,861 INFO L87 Difference]: Start difference. First operand 15645 states and 16977 transitions. Second operand 7 states. [2020-10-13 09:21:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:21:58,797 INFO L93 Difference]: Finished difference Result 31046 states and 33734 transitions. [2020-10-13 09:21:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:21:58,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1844 [2020-10-13 09:21:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:21:58,828 INFO L225 Difference]: With dead ends: 31046 [2020-10-13 09:21:58,829 INFO L226 Difference]: Without dead ends: 15651 [2020-10-13 09:21:58,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:21:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15651 states. [2020-10-13 09:21:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15651 to 15645. [2020-10-13 09:21:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15645 states. [2020-10-13 09:21:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15645 states to 15645 states and 16975 transitions. [2020-10-13 09:21:59,110 INFO L78 Accepts]: Start accepts. Automaton has 15645 states and 16975 transitions. Word has length 1844 [2020-10-13 09:21:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:21:59,111 INFO L479 AbstractCegarLoop]: Abstraction has 15645 states and 16975 transitions. [2020-10-13 09:21:59,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:21:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 15645 states and 16975 transitions. [2020-10-13 09:21:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1859 [2020-10-13 09:21:59,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:21:59,164 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:21:59,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 09:21:59,165 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:21:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:21:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1932545953, now seen corresponding path program 1 times [2020-10-13 09:21:59,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:21:59,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133595517] [2020-10-13 09:21:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY