/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem03_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:47:00,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:47:00,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:47:00,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:47:00,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:47:00,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:47:00,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:47:00,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:47:00,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:47:00,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:47:00,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:47:00,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:47:00,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:47:00,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:47:00,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:47:00,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:47:00,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:47:00,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:47:00,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:47:00,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:47:00,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:47:00,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:47:00,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:47:00,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:47:00,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:47:00,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:47:00,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:47:00,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:47:00,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:47:00,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:47:00,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:47:00,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:47:00,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:47:00,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:47:00,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:47:00,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:47:00,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:47:00,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:47:00,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:47:00,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:47:00,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:47:00,721 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 [2020-10-14 00:47:00,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:47:00,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:47:00,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:47:00,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:47:00,761 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:47:00,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:47:00,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:47:00,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:47:00,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:47:00,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:47:00,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:47:00,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:47:00,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:47:00,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:47:00,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:47:00,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:47:00,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:47:00,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:47:00,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:47:00,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:47:00,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:47:00,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:47:00,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:47:00,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:47:00,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:47:00,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:47:00,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:47:00,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:47:00,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:47:00,768 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:47:01,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:47:01,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:47:01,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:47:01,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:47:01,144 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:47:01,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09.c [2020-10-14 00:47:01,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b00e1a9/9d8204b0a3f642d4a3f1a55b89f1453a/FLAG030811f05 [2020-10-14 00:47:01,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:47:01,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label09.c [2020-10-14 00:47:01,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b00e1a9/9d8204b0a3f642d4a3f1a55b89f1453a/FLAG030811f05 [2020-10-14 00:47:01,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a3b00e1a9/9d8204b0a3f642d4a3f1a55b89f1453a [2020-10-14 00:47:01,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:47:01,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:47:01,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:47:01,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:47:01,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:47:01,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:47:01" (1/1) ... [2020-10-14 00:47:01,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39062356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:01, skipping insertion in model container [2020-10-14 00:47:01,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:47:01" (1/1) ... [2020-10-14 00:47:02,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:47:02,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:47:02,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:47:02,914 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:47:03,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:47:03,346 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:47:03,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03 WrapperNode [2020-10-14 00:47:03,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:47:03,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:47:03,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:47:03,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:47:03,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (1/1) ... [2020-10-14 00:47:03,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (1/1) ... [2020-10-14 00:47:03,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (1/1) ... [2020-10-14 00:47:03,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (1/1) ... [2020-10-14 00:47:03,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (1/1) ... [2020-10-14 00:47:03,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (1/1) ... [2020-10-14 00:47:03,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (1/1) ... [2020-10-14 00:47:03,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:47:03,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:47:03,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:47:03,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:47:03,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (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 [2020-10-14 00:47:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:47:03,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:47:03,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:47:03,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:47:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:47:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:47:03,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:47:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:47:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:47:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:47:03,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:47:05,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:47:05,609 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:47:05,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:47:05 BoogieIcfgContainer [2020-10-14 00:47:05,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:47:05,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:47:05,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:47:05,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:47:05,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:47:01" (1/3) ... [2020-10-14 00:47:05,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19798745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:47:05, skipping insertion in model container [2020-10-14 00:47:05,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:03" (2/3) ... [2020-10-14 00:47:05,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19798745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:47:05, skipping insertion in model container [2020-10-14 00:47:05,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:47:05" (3/3) ... [2020-10-14 00:47:05,624 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label09.c [2020-10-14 00:47:05,635 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:47:05,645 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:47:05,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:47:05,685 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:47:05,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:47:05,686 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:47:05,686 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:47:05,686 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:47:05,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:47:05,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:47:05,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:47:05,711 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:47:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 00:47:05,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:05,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:05,728 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:05,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:05,734 INFO L82 PathProgramCache]: Analyzing trace with hash -520892331, now seen corresponding path program 1 times [2020-10-14 00:47:05,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:05,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828018623] [2020-10-14 00:47:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:10,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:10,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 00:47:10,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3963 [2020-10-14 00:47:10,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:10,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:47:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 00:47:10,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:47:10,541 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:10,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:47:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:10,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:10,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:10,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828018623] [2020-10-14 00:47:10,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:47:10,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:47:10,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155406358] [2020-10-14 00:47:10,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:47:10,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:10,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:47:10,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:47:10,716 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:47:10,911 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:13,852 INFO L93 Difference]: Finished difference Result 884 states and 1536 transitions. [2020-10-14 00:47:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:13,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-14 00:47:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:13,891 INFO L225 Difference]: With dead ends: 884 [2020-10-14 00:47:13,891 INFO L226 Difference]: Without dead ends: 480 [2020-10-14 00:47:13,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-14 00:47:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-10-14 00:47:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 00:47:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 728 transitions. [2020-10-14 00:47:13,997 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 728 transitions. Word has length 154 [2020-10-14 00:47:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:13,998 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 728 transitions. [2020-10-14 00:47:13,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:47:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 728 transitions. [2020-10-14 00:47:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 00:47:14,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:14,014 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:47:14,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:47:14,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:14,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1289479538, now seen corresponding path program 1 times [2020-10-14 00:47:14,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:14,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706530779] [2020-10-14 00:47:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:14,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:16,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:16,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 00:47:16,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:16,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2615 [2020-10-14 00:47:16,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:16,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:47:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:47:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:16,940 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:16,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:16,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:16,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:16,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:16,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:16,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:16,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:16,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:17,097 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:47:17,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:17,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:17,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:47:17,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:17,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:17,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:17,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706530779] [2020-10-14 00:47:17,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:17,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:17,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197192887] [2020-10-14 00:47:17,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:17,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:17,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:17,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:17,203 INFO L87 Difference]: Start difference. First operand 475 states and 728 transitions. Second operand 5 states. [2020-10-14 00:47:17,421 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:20,025 INFO L93 Difference]: Finished difference Result 1380 states and 2141 transitions. [2020-10-14 00:47:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:20,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-14 00:47:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:20,035 INFO L225 Difference]: With dead ends: 1380 [2020-10-14 00:47:20,035 INFO L226 Difference]: Without dead ends: 911 [2020-10-14 00:47:20,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-10-14 00:47:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 904. [2020-10-14 00:47:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-10-14 00:47:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1321 transitions. [2020-10-14 00:47:20,100 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1321 transitions. Word has length 163 [2020-10-14 00:47:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:20,100 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1321 transitions. [2020-10-14 00:47:20,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1321 transitions. [2020-10-14 00:47:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 00:47:20,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:20,108 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:20,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:47:20,108 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1691597835, now seen corresponding path program 1 times [2020-10-14 00:47:20,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:20,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835439568] [2020-10-14 00:47:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:22,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:25,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 00:47:25,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:47:25,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 00:47:25,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:25,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:25,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:25,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:47:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 00:47:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:25,470 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:25,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:25,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:25,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:25,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:25,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:25,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:25,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:25,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:25,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:47:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:25,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:25,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:47:25,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835439568] [2020-10-14 00:47:25,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:25,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:25,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298684839] [2020-10-14 00:47:25,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:25,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:25,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:25,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:25,682 INFO L87 Difference]: Start difference. First operand 904 states and 1321 transitions. Second operand 5 states. [2020-10-14 00:47:26,101 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:28,604 INFO L93 Difference]: Finished difference Result 2648 states and 3900 transitions. [2020-10-14 00:47:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:28,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 00:47:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:28,615 INFO L225 Difference]: With dead ends: 2648 [2020-10-14 00:47:28,616 INFO L226 Difference]: Without dead ends: 907 [2020-10-14 00:47:28,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-10-14 00:47:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 903. [2020-10-14 00:47:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-14 00:47:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1319 transitions. [2020-10-14 00:47:28,692 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1319 transitions. Word has length 173 [2020-10-14 00:47:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:28,694 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1319 transitions. [2020-10-14 00:47:28,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1319 transitions. [2020-10-14 00:47:28,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 00:47:28,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:28,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:28,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:47:28,702 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:28,703 INFO L82 PathProgramCache]: Analyzing trace with hash 706729109, now seen corresponding path program 1 times [2020-10-14 00:47:28,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:28,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935375847] [2020-10-14 00:47:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:29,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:31,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:31,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 00:47:31,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2233 [2020-10-14 00:47:31,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:31,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 00:47:31,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:47:31,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:31,214 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:31,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:31,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:31,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:31,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:31,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:31,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:31,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:31,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:47:31,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:47:31,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:31,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:47:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:31,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935375847] [2020-10-14 00:47:31,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:31,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:31,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724678639] [2020-10-14 00:47:31,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:31,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:31,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:31,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:31,417 INFO L87 Difference]: Start difference. First operand 903 states and 1319 transitions. Second operand 5 states. [2020-10-14 00:47:31,684 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:34,287 INFO L93 Difference]: Finished difference Result 2643 states and 3927 transitions. [2020-10-14 00:47:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:34,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-14 00:47:34,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:34,298 INFO L225 Difference]: With dead ends: 2643 [2020-10-14 00:47:34,298 INFO L226 Difference]: Without dead ends: 1746 [2020-10-14 00:47:34,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:34,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-14 00:47:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1739. [2020-10-14 00:47:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1739 states. [2020-10-14 00:47:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2510 transitions. [2020-10-14 00:47:34,354 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2510 transitions. Word has length 172 [2020-10-14 00:47:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:34,355 INFO L479 AbstractCegarLoop]: Abstraction has 1739 states and 2510 transitions. [2020-10-14 00:47:34,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:34,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2510 transitions. [2020-10-14 00:47:34,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 00:47:34,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:34,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-14 00:47:34,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:47:34,361 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:34,362 INFO L82 PathProgramCache]: Analyzing trace with hash -721263259, now seen corresponding path program 1 times [2020-10-14 00:47:34,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:34,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531103290] [2020-10-14 00:47:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:36,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:39,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:39,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 00:47:39,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:47:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:47:39,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:39,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 00:47:39,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:47:39,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:39,773 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:39,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:39,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:39,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:39,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:39,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:39,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:47:39,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:39,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:39,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:39,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:39,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:39,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:39,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:39,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:47:39,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:39,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:39,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:39,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:39,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:39,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:47:40,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:40,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 00:47:40,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:40,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:47:40,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:40,157 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:47:40,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531103290] [2020-10-14 00:47:40,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:40,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:40,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722379754] [2020-10-14 00:47:40,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:40,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:40,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:40,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:40,161 INFO L87 Difference]: Start difference. First operand 1739 states and 2510 transitions. Second operand 5 states. [2020-10-14 00:47:40,358 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:43,102 INFO L93 Difference]: Finished difference Result 5168 states and 7624 transitions. [2020-10-14 00:47:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:43,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-14 00:47:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:43,127 INFO L225 Difference]: With dead ends: 5168 [2020-10-14 00:47:43,127 INFO L226 Difference]: Without dead ends: 3435 [2020-10-14 00:47:43,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2020-10-14 00:47:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3414. [2020-10-14 00:47:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3414 states. [2020-10-14 00:47:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 5033 transitions. [2020-10-14 00:47:43,263 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 5033 transitions. Word has length 180 [2020-10-14 00:47:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:43,263 INFO L479 AbstractCegarLoop]: Abstraction has 3414 states and 5033 transitions. [2020-10-14 00:47:43,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 5033 transitions. [2020-10-14 00:47:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 00:47:43,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:43,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:43,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:47:43,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash 626663498, now seen corresponding path program 1 times [2020-10-14 00:47:43,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:43,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592723058] [2020-10-14 00:47:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:43,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:46,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:46,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 00:47:46,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:47:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3451 [2020-10-14 00:47:46,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:46,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 00:47:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:47:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:47,058 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:47,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:47,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:47,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:47,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:47,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:47:47,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:47,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:47,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:47,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:47,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:47,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 00:47:47,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 00:47:47,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:47,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:47,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:47:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:47,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592723058] [2020-10-14 00:47:47,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:47,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:47:47,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405735858] [2020-10-14 00:47:47,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:47:47,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:47,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:47:47,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:47,433 INFO L87 Difference]: Start difference. First operand 3414 states and 5033 transitions. Second operand 6 states. [2020-10-14 00:47:47,607 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:50,561 INFO L93 Difference]: Finished difference Result 8501 states and 12804 transitions. [2020-10-14 00:47:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:50,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-10-14 00:47:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:50,588 INFO L225 Difference]: With dead ends: 8501 [2020-10-14 00:47:50,588 INFO L226 Difference]: Without dead ends: 5093 [2020-10-14 00:47:50,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2020-10-14 00:47:50,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 5086. [2020-10-14 00:47:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5086 states. [2020-10-14 00:47:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 7613 transitions. [2020-10-14 00:47:50,862 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 7613 transitions. Word has length 190 [2020-10-14 00:47:50,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:50,864 INFO L479 AbstractCegarLoop]: Abstraction has 5086 states and 7613 transitions. [2020-10-14 00:47:50,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:47:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 7613 transitions. [2020-10-14 00:47:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 00:47:50,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:50,884 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:50,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:47:50,884 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:50,885 INFO L82 PathProgramCache]: Analyzing trace with hash -317347459, now seen corresponding path program 1 times [2020-10-14 00:47:50,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:50,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632627850] [2020-10-14 00:47:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:55,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:55,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 00:47:55,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:47:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 00:47:55,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:55,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 00:47:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 00:47:55,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:56,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:56,278 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:47:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:56,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:56,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:56,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:47:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 00:47:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:47:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:47:56,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632627850] [2020-10-14 00:47:56,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:56,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:56,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429325751] [2020-10-14 00:47:56,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:56,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:56,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:56,549 INFO L87 Difference]: Start difference. First operand 5086 states and 7613 transitions. Second operand 5 states. [2020-10-14 00:47:56,689 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:59,414 INFO L93 Difference]: Finished difference Result 14997 states and 23172 transitions. [2020-10-14 00:47:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:59,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-14 00:47:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:59,471 INFO L225 Difference]: With dead ends: 14997 [2020-10-14 00:47:59,472 INFO L226 Difference]: Without dead ends: 9917 [2020-10-14 00:47:59,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9917 states. [2020-10-14 00:47:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9917 to 8645. [2020-10-14 00:47:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8645 states. [2020-10-14 00:47:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8645 states to 8645 states and 13197 transitions. [2020-10-14 00:47:59,816 INFO L78 Accepts]: Start accepts. Automaton has 8645 states and 13197 transitions. Word has length 200 [2020-10-14 00:47:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:59,817 INFO L479 AbstractCegarLoop]: Abstraction has 8645 states and 13197 transitions. [2020-10-14 00:47:59,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 8645 states and 13197 transitions. [2020-10-14 00:47:59,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 00:47:59,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:59,853 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:47:59,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:47:59,853 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1668698782, now seen corresponding path program 1 times [2020-10-14 00:47:59,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:59,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321681865] [2020-10-14 00:47:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:03,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:03,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 00:48:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3201 [2020-10-14 00:48:03,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:03,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:48:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 00:48:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:03,248 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:03,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:03,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:03,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:03,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:03,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:03,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:03,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:48:03,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:48:03,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:03,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:48:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:03,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:48:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:03,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:03,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:03,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 00:48:03,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 00:48:03,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:03,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:48:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:03,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321681865] [2020-10-14 00:48:03,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:03,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:03,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368960632] [2020-10-14 00:48:03,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:03,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:03,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:03,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:03,657 INFO L87 Difference]: Start difference. First operand 8645 states and 13197 transitions. Second operand 7 states. [2020-10-14 00:48:03,909 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:08,514 INFO L93 Difference]: Finished difference Result 20526 states and 33754 transitions. [2020-10-14 00:48:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:08,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-14 00:48:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:08,594 INFO L225 Difference]: With dead ends: 20526 [2020-10-14 00:48:08,594 INFO L226 Difference]: Without dead ends: 11887 [2020-10-14 00:48:08,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:08,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2020-10-14 00:48:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 11507. [2020-10-14 00:48:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11507 states. [2020-10-14 00:48:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11507 states to 11507 states and 17293 transitions. [2020-10-14 00:48:09,112 INFO L78 Accepts]: Start accepts. Automaton has 11507 states and 17293 transitions. Word has length 210 [2020-10-14 00:48:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:09,112 INFO L479 AbstractCegarLoop]: Abstraction has 11507 states and 17293 transitions. [2020-10-14 00:48:09,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:09,113 INFO L276 IsEmpty]: Start isEmpty. Operand 11507 states and 17293 transitions. [2020-10-14 00:48:09,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 00:48:09,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:09,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:09,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:48:09,161 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:09,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1498060806, now seen corresponding path program 1 times [2020-10-14 00:48:09,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:09,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436647526] [2020-10-14 00:48:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 00:48:11,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:11,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2176 [2020-10-14 00:48:11,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:48:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 00:48:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,552 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:11,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:11,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:48:11,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:48:11,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:48:11,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:48:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:11,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:11,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 00:48:11,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 00:48:11,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:11,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:48:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:11,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436647526] [2020-10-14 00:48:11,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:11,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:11,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369016639] [2020-10-14 00:48:11,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:11,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:11,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:11,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:11,845 INFO L87 Difference]: Start difference. First operand 11507 states and 17293 transitions. Second operand 7 states. [2020-10-14 00:48:11,988 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:12,539 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:15,051 INFO L93 Difference]: Finished difference Result 20105 states and 30360 transitions. [2020-10-14 00:48:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:15,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-10-14 00:48:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:15,086 INFO L225 Difference]: With dead ends: 20105 [2020-10-14 00:48:15,086 INFO L226 Difference]: Without dead ends: 8656 [2020-10-14 00:48:15,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2020-10-14 00:48:15,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 8544. [2020-10-14 00:48:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8544 states. [2020-10-14 00:48:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8544 states to 8544 states and 11109 transitions. [2020-10-14 00:48:15,358 INFO L78 Accepts]: Start accepts. Automaton has 8544 states and 11109 transitions. Word has length 212 [2020-10-14 00:48:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:15,358 INFO L479 AbstractCegarLoop]: Abstraction has 8544 states and 11109 transitions. [2020-10-14 00:48:15,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8544 states and 11109 transitions. [2020-10-14 00:48:15,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 00:48:15,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:15,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:15,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:48:15,385 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:15,385 INFO L82 PathProgramCache]: Analyzing trace with hash 804016484, now seen corresponding path program 1 times [2020-10-14 00:48:15,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:15,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894967706] [2020-10-14 00:48:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:18,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 00:48:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,608 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:20,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:20,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:20,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:20,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:48:20,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:20,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:20,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:20,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:48:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:20,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:48:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 00:48:20,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:20,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 00:48:20,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:20,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:48:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 00:48:21,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894967706] [2020-10-14 00:48:21,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:21,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:21,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156677910] [2020-10-14 00:48:21,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:21,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:21,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:21,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:21,077 INFO L87 Difference]: Start difference. First operand 8544 states and 11109 transitions. Second operand 7 states. [2020-10-14 00:48:21,302 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:21,543 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:25,279 INFO L93 Difference]: Finished difference Result 21346 states and 28950 transitions. [2020-10-14 00:48:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:25,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-14 00:48:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:25,327 INFO L225 Difference]: With dead ends: 21346 [2020-10-14 00:48:25,327 INFO L226 Difference]: Without dead ends: 12808 [2020-10-14 00:48:25,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12808 states. [2020-10-14 00:48:25,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12808 to 12641. [2020-10-14 00:48:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12641 states. [2020-10-14 00:48:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12641 states to 12641 states and 16030 transitions. [2020-10-14 00:48:25,920 INFO L78 Accepts]: Start accepts. Automaton has 12641 states and 16030 transitions. Word has length 246 [2020-10-14 00:48:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:25,921 INFO L479 AbstractCegarLoop]: Abstraction has 12641 states and 16030 transitions. [2020-10-14 00:48:25,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 12641 states and 16030 transitions. [2020-10-14 00:48:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 00:48:25,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:25,957 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:25,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:48:25,957 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:25,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:25,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1023580176, now seen corresponding path program 1 times [2020-10-14 00:48:25,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:25,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017306092] [2020-10-14 00:48:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:26,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 00:48:31,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:31,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 00:48:31,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 00:48:31,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 00:48:31,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,242 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:31,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:31,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:48:31,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:31,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:48:31,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:31,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:31,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:31,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:48:31,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 00:48:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:31,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 00:48:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 00:48:31,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017306092] [2020-10-14 00:48:31,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:31,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:48:31,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758162273] [2020-10-14 00:48:31,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:48:31,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:31,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:48:31,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:48:31,558 INFO L87 Difference]: Start difference. First operand 12641 states and 16030 transitions. Second operand 5 states. [2020-10-14 00:48:31,694 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:48:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:34,388 INFO L93 Difference]: Finished difference Result 33250 states and 42449 transitions. [2020-10-14 00:48:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:34,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-14 00:48:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:34,450 INFO L225 Difference]: With dead ends: 33250 [2020-10-14 00:48:34,450 INFO L226 Difference]: Without dead ends: 20647 [2020-10-14 00:48:34,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:48:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20647 states. [2020-10-14 00:48:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20647 to 20625. [2020-10-14 00:48:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20625 states. [2020-10-14 00:48:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20625 states to 20625 states and 26242 transitions. [2020-10-14 00:48:35,030 INFO L78 Accepts]: Start accepts. Automaton has 20625 states and 26242 transitions. Word has length 252 [2020-10-14 00:48:35,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:35,030 INFO L479 AbstractCegarLoop]: Abstraction has 20625 states and 26242 transitions. [2020-10-14 00:48:35,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:48:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 20625 states and 26242 transitions. [2020-10-14 00:48:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-14 00:48:35,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:35,081 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:35,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:48:35,081 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1893299663, now seen corresponding path program 1 times [2020-10-14 00:48:35,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:35,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456284068] [2020-10-14 00:48:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:36,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 00:48:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:37,312 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:37,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:37,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:37,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:37,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:37,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:37,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:37,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:37,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:37,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:37,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:48:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:37,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:37,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:37,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:48:37,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 00:48:37,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:37,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:37,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:48:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:37,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456284068] [2020-10-14 00:48:37,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:37,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:37,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999197353] [2020-10-14 00:48:37,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:37,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:37,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:37,987 INFO L87 Difference]: Start difference. First operand 20625 states and 26242 transitions. Second operand 7 states. [2020-10-14 00:48:38,326 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:48:38,901 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:48:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:42,011 INFO L93 Difference]: Finished difference Result 46974 states and 64122 transitions. [2020-10-14 00:48:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:42,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-14 00:48:42,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:42,125 INFO L225 Difference]: With dead ends: 46974 [2020-10-14 00:48:42,125 INFO L226 Difference]: Without dead ends: 27396 [2020-10-14 00:48:42,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:48:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27396 states. [2020-10-14 00:48:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27396 to 26170. [2020-10-14 00:48:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26170 states. [2020-10-14 00:48:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26170 states to 26170 states and 33042 transitions. [2020-10-14 00:48:44,418 INFO L78 Accepts]: Start accepts. Automaton has 26170 states and 33042 transitions. Word has length 264 [2020-10-14 00:48:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:44,418 INFO L479 AbstractCegarLoop]: Abstraction has 26170 states and 33042 transitions. [2020-10-14 00:48:44,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 26170 states and 33042 transitions. [2020-10-14 00:48:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 00:48:44,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:44,462 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:44,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:48:44,462 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:44,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:44,463 INFO L82 PathProgramCache]: Analyzing trace with hash -171302963, now seen corresponding path program 1 times [2020-10-14 00:48:44,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:44,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799648722] [2020-10-14 00:48:44,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1827 [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:48:46,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 00:48:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,592 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:46,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:48:46,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:46,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:48:46,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 00:48:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:46,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:48:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:48:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:46,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:48:47,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 00:48:47,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:47,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:48:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:48:47,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799648722] [2020-10-14 00:48:47,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:47,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:47,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277918700] [2020-10-14 00:48:47,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:47,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:47,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:47,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:47,158 INFO L87 Difference]: Start difference. First operand 26170 states and 33042 transitions. Second operand 7 states. [2020-10-14 00:48:47,470 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:47,985 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:51,115 INFO L93 Difference]: Finished difference Result 58796 states and 78675 transitions. [2020-10-14 00:48:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:51,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-14 00:48:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:51,259 INFO L225 Difference]: With dead ends: 58796 [2020-10-14 00:48:51,259 INFO L226 Difference]: Without dead ends: 33673 [2020-10-14 00:48:51,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33673 states. [2020-10-14 00:48:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33673 to 32352. [2020-10-14 00:48:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32352 states. [2020-10-14 00:48:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32352 states to 32352 states and 40358 transitions. [2020-10-14 00:48:52,295 INFO L78 Accepts]: Start accepts. Automaton has 32352 states and 40358 transitions. Word has length 278 [2020-10-14 00:48:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:52,295 INFO L479 AbstractCegarLoop]: Abstraction has 32352 states and 40358 transitions. [2020-10-14 00:48:52,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:52,295 INFO L276 IsEmpty]: Start isEmpty. Operand 32352 states and 40358 transitions. [2020-10-14 00:48:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 00:48:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:52,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:48:52,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:48:52,340 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:52,341 INFO L82 PathProgramCache]: Analyzing trace with hash -240926482, now seen corresponding path program 1 times [2020-10-14 00:48:52,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:52,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268196479] [2020-10-14 00:48:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:56,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:56,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 00:48:56,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4252 [2020-10-14 00:48:56,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:56,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 00:48:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 00:48:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:56,810 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:56,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:56,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:56,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:56,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:48:56,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:56,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:56,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:56,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:56,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:48:56,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:48:56,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:56,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:48:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:56,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:56,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:48:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:48:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:57,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:57,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:48:57,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 00:48:57,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:57,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:48:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 00:48:57,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268196479] [2020-10-14 00:48:57,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:57,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:57,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685126982] [2020-10-14 00:48:57,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:57,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:57,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:57,242 INFO L87 Difference]: Start difference. First operand 32352 states and 40358 transitions. Second operand 7 states. [2020-10-14 00:48:57,370 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:58,466 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:00,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:00,547 INFO L93 Difference]: Finished difference Result 63818 states and 80501 transitions. [2020-10-14 00:49:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:00,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-14 00:49:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:00,648 INFO L225 Difference]: With dead ends: 63818 [2020-10-14 00:49:00,648 INFO L226 Difference]: Without dead ends: 32513 [2020-10-14 00:49:00,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32513 states. [2020-10-14 00:49:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32513 to 31946. [2020-10-14 00:49:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31946 states. [2020-10-14 00:49:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31946 states to 31946 states and 38429 transitions. [2020-10-14 00:49:01,396 INFO L78 Accepts]: Start accepts. Automaton has 31946 states and 38429 transitions. Word has length 281 [2020-10-14 00:49:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:01,396 INFO L479 AbstractCegarLoop]: Abstraction has 31946 states and 38429 transitions. [2020-10-14 00:49:01,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 31946 states and 38429 transitions. [2020-10-14 00:49:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-14 00:49:01,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:01,425 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:01,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:49:01,426 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash -895524536, now seen corresponding path program 1 times [2020-10-14 00:49:01,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:01,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370226933] [2020-10-14 00:49:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:01,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:01,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:01,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:06,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:06,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 00:49:06,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:49:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 00:49:06,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:06,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:49:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:49:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:49:06,672 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:06,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:06,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:06,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:06,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:49:06,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:06,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:06,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:06,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:49:06,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:06,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:49:06,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:06,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:49:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:49:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:06,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:49:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:49:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:06,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:06,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:49:06,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:06,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:49:06,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:06,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:06,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:49:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:49:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:06,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:06,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:06,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:49:06,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:49:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:06,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:49:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:06,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 00:49:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:07,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:07,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 00:49:07,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:07,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:49:07,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:07,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:49:07,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:07,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 152 proven. 44 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-10-14 00:49:07,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370226933] [2020-10-14 00:49:07,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:07,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:07,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248553424] [2020-10-14 00:49:07,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:07,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:07,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:07,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:07,115 INFO L87 Difference]: Start difference. First operand 31946 states and 38429 transitions. Second operand 7 states. [2020-10-14 00:49:07,257 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:08,993 INFO L93 Difference]: Finished difference Result 53481 states and 64307 transitions. [2020-10-14 00:49:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:49:08,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-14 00:49:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:09,030 INFO L225 Difference]: With dead ends: 53481 [2020-10-14 00:49:09,030 INFO L226 Difference]: Without dead ends: 22582 [2020-10-14 00:49:09,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:49:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22582 states. [2020-10-14 00:49:09,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22582 to 22130. [2020-10-14 00:49:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22130 states. [2020-10-14 00:49:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22130 states to 22130 states and 26022 transitions. [2020-10-14 00:49:09,487 INFO L78 Accepts]: Start accepts. Automaton has 22130 states and 26022 transitions. Word has length 297 [2020-10-14 00:49:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:09,487 INFO L479 AbstractCegarLoop]: Abstraction has 22130 states and 26022 transitions. [2020-10-14 00:49:09,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 22130 states and 26022 transitions. [2020-10-14 00:49:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-14 00:49:09,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:09,528 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:09,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:49:09,529 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:09,529 INFO L82 PathProgramCache]: Analyzing trace with hash -471262856, now seen corresponding path program 1 times [2020-10-14 00:49:09,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:09,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421463128] [2020-10-14 00:49:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:10,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-14 00:49:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 00:49:14,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:14,879 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:14,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:14,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:14,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:14,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:14,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:14,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:14,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:14,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:14,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:14,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:14,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:49:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 00:49:15,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 00:49:15,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 00:49:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-14 00:49:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 00:49:15,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 00:49:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:49:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:49:15,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421463128] [2020-10-14 00:49:15,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:15,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:15,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926048243] [2020-10-14 00:49:15,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:15,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:15,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:15,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:15,352 INFO L87 Difference]: Start difference. First operand 22130 states and 26022 transitions. Second operand 7 states. [2020-10-14 00:49:15,484 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:17,041 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:18,320 INFO L93 Difference]: Finished difference Result 43785 states and 52290 transitions. [2020-10-14 00:49:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:18,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-14 00:49:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:18,381 INFO L225 Difference]: With dead ends: 43785 [2020-10-14 00:49:18,382 INFO L226 Difference]: Without dead ends: 22706 [2020-10-14 00:49:18,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22706 states. [2020-10-14 00:49:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22706 to 21086. [2020-10-14 00:49:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21086 states. [2020-10-14 00:49:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21086 states to 21086 states and 24244 transitions. [2020-10-14 00:49:18,919 INFO L78 Accepts]: Start accepts. Automaton has 21086 states and 24244 transitions. Word has length 339 [2020-10-14 00:49:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:18,920 INFO L479 AbstractCegarLoop]: Abstraction has 21086 states and 24244 transitions. [2020-10-14 00:49:18,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 21086 states and 24244 transitions. [2020-10-14 00:49:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-14 00:49:18,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:18,948 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:18,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:49:18,948 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:18,949 INFO L82 PathProgramCache]: Analyzing trace with hash 494024946, now seen corresponding path program 1 times [2020-10-14 00:49:18,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:18,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100847212] [2020-10-14 00:49:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:19,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:19,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:19,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:24,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:24,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 00:49:24,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:49:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:49:24,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:24,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:49:24,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:49:24,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:24,187 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:24,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:24,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:24,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:24,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:24,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:24,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:24,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:24,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:24,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:49:24,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:24,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:49:24,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:24,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:24,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:24,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:49:24,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:24,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:49:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:24,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:24,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:49:24,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:24,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 00:49:24,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:24,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:24,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:24,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:49:24,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 00:49:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:24,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:49:24,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:49:24,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:24,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:49:24,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 00:49:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 00:49:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 214 proven. 86 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 00:49:25,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100847212] [2020-10-14 00:49:25,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:25,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:25,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396012404] [2020-10-14 00:49:25,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:25,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:25,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:25,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:25,032 INFO L87 Difference]: Start difference. First operand 21086 states and 24244 transitions. Second operand 7 states. [2020-10-14 00:49:25,325 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:26,686 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:49:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:28,468 INFO L93 Difference]: Finished difference Result 45920 states and 54693 transitions. [2020-10-14 00:49:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:28,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-14 00:49:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:28,527 INFO L225 Difference]: With dead ends: 45920 [2020-10-14 00:49:28,527 INFO L226 Difference]: Without dead ends: 25885 [2020-10-14 00:49:28,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:49:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25885 states. [2020-10-14 00:49:29,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25885 to 25226. [2020-10-14 00:49:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25226 states. [2020-10-14 00:49:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25226 states to 25226 states and 28717 transitions. [2020-10-14 00:49:29,086 INFO L78 Accepts]: Start accepts. Automaton has 25226 states and 28717 transitions. Word has length 354 [2020-10-14 00:49:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:29,087 INFO L479 AbstractCegarLoop]: Abstraction has 25226 states and 28717 transitions. [2020-10-14 00:49:29,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 25226 states and 28717 transitions. [2020-10-14 00:49:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-14 00:49:29,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:29,114 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:49:29,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:49:29,114 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:29,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1713839218, now seen corresponding path program 1 times [2020-10-14 00:49:29,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:29,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302556785] [2020-10-14 00:49:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:29,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:34,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4867 [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:49:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:34,222 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:34,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:34,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:34,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:34,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:34,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:49:34,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:34,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:49:34,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:34,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:34,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:49:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:49:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:34,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:49:34,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:34,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 00:49:34,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:34,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:34,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:34,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:34,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:49:34,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 00:49:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:34,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:49:34,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:49:34,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:34,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:49:34,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:34,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 00:49:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:34,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:34,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:49:34,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 00:49:34,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:34,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 00:49:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 242 proven. 86 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 00:49:34,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302556785] [2020-10-14 00:49:34,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:34,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:34,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262835209] [2020-10-14 00:49:34,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:34,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:34,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:34,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:34,774 INFO L87 Difference]: Start difference. First operand 25226 states and 28717 transitions. Second operand 7 states. [2020-10-14 00:49:35,004 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:49:35,409 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:39,192 INFO L93 Difference]: Finished difference Result 55104 states and 65014 transitions. [2020-10-14 00:49:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:49:39,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2020-10-14 00:49:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:39,267 INFO L225 Difference]: With dead ends: 55104 [2020-10-14 00:49:39,267 INFO L226 Difference]: Without dead ends: 34943 [2020-10-14 00:49:39,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34943 states. [2020-10-14 00:49:39,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34943 to 34325. [2020-10-14 00:49:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34325 states. [2020-10-14 00:49:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34325 states to 34325 states and 39124 transitions. [2020-10-14 00:49:40,005 INFO L78 Accepts]: Start accepts. Automaton has 34325 states and 39124 transitions. Word has length 368 [2020-10-14 00:49:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:40,005 INFO L479 AbstractCegarLoop]: Abstraction has 34325 states and 39124 transitions. [2020-10-14 00:49:40,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 34325 states and 39124 transitions. [2020-10-14 00:49:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-14 00:49:40,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:40,033 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:40,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:49:40,033 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1557883166, now seen corresponding path program 1 times [2020-10-14 00:49:40,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:40,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036489976] [2020-10-14 00:49:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:40,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:40,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:45,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-14 00:49:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:49:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 00:49:45,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:45,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:49:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:49:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:45,307 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:45,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:45,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:45,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:45,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:45,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:45,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:45,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:45,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:49:45,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:45,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:49:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:45,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:45,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:45,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:49:45,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 00:49:45,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:45,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:49:45,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:45,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-14 00:49:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:49:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:49:45,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:45,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:49:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:45,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:49:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:45,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:45,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:49:45,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 00:49:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:45,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 00:49:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 231 proven. 103 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 00:49:46,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036489976] [2020-10-14 00:49:46,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:46,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:46,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570719540] [2020-10-14 00:49:46,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:46,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:46,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:46,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:46,045 INFO L87 Difference]: Start difference. First operand 34325 states and 39124 transitions. Second operand 7 states. [2020-10-14 00:49:46,359 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:47,265 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:49:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:49,367 INFO L93 Difference]: Finished difference Result 64771 states and 76490 transitions. [2020-10-14 00:49:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:49,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 373 [2020-10-14 00:49:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:49,452 INFO L225 Difference]: With dead ends: 64771 [2020-10-14 00:49:49,452 INFO L226 Difference]: Without dead ends: 39336 [2020-10-14 00:49:49,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:49:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39336 states. [2020-10-14 00:49:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39336 to 38547. [2020-10-14 00:49:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38547 states. [2020-10-14 00:49:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38547 states to 38547 states and 43243 transitions. [2020-10-14 00:49:50,078 INFO L78 Accepts]: Start accepts. Automaton has 38547 states and 43243 transitions. Word has length 373 [2020-10-14 00:49:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:50,078 INFO L479 AbstractCegarLoop]: Abstraction has 38547 states and 43243 transitions. [2020-10-14 00:49:50,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:50,078 INFO L276 IsEmpty]: Start isEmpty. Operand 38547 states and 43243 transitions. [2020-10-14 00:49:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-14 00:49:50,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:50,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:50,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:49:50,107 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:50,107 INFO L82 PathProgramCache]: Analyzing trace with hash -153894140, now seen corresponding path program 1 times [2020-10-14 00:49:50,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:50,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833004766] [2020-10-14 00:49:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:54,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:54,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-14 00:49:54,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:49:54,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4220 [2020-10-14 00:49:54,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:54,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:49:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:49:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 00:49:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:49:54,640 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:54,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:54,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:54,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:54,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:54,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:54,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:49:54,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:54,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:54,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:54,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:49:54,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:49:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:55,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:55,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 00:49:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 00:49:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:55,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 226 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:49:55,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833004766] [2020-10-14 00:49:55,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:55,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:55,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512695387] [2020-10-14 00:49:55,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:55,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:55,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:55,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:55,581 INFO L87 Difference]: Start difference. First operand 38547 states and 43243 transitions. Second operand 7 states. [2020-10-14 00:49:55,722 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:49:57,435 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 00:49:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:58,227 INFO L93 Difference]: Finished difference Result 68910 states and 77245 transitions. [2020-10-14 00:49:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:58,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-14 00:49:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:58,306 INFO L225 Difference]: With dead ends: 68910 [2020-10-14 00:49:58,307 INFO L226 Difference]: Without dead ends: 39257 [2020-10-14 00:49:58,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:49:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39257 states. [2020-10-14 00:49:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39257 to 39194. [2020-10-14 00:49:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39194 states. [2020-10-14 00:49:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39194 states to 39194 states and 44039 transitions. [2020-10-14 00:49:59,170 INFO L78 Accepts]: Start accepts. Automaton has 39194 states and 44039 transitions. Word has length 386 [2020-10-14 00:49:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:59,170 INFO L479 AbstractCegarLoop]: Abstraction has 39194 states and 44039 transitions. [2020-10-14 00:49:59,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 39194 states and 44039 transitions. [2020-10-14 00:49:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-14 00:49:59,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:59,199 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:49:59,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:49:59,200 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1090146825, now seen corresponding path program 1 times [2020-10-14 00:49:59,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:59,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609903467] [2020-10-14 00:49:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:59,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:50:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:04,473 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:04,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:04,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:04,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:50:04,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:04,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:04,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:04,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:04,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:04,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:50:04,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:04,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:04,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:50:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:04,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:50:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 00:50:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:04,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:50:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:50:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:04,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:04,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:50:04,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 00:50:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:04,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:04,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:50:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 00:50:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:04,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 00:50:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:04,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:50:04,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 00:50:04,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:04,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 00:50:04,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 306 proven. 66 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-10-14 00:50:05,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609903467] [2020-10-14 00:50:05,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:05,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:05,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084908650] [2020-10-14 00:50:05,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:05,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:05,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:05,082 INFO L87 Difference]: Start difference. First operand 39194 states and 44039 transitions. Second operand 7 states. [2020-10-14 00:50:05,362 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:06,607 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:50:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:08,293 INFO L93 Difference]: Finished difference Result 70750 states and 81883 transitions. [2020-10-14 00:50:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:50:08,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 390 [2020-10-14 00:50:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:08,382 INFO L225 Difference]: With dead ends: 70750 [2020-10-14 00:50:08,382 INFO L226 Difference]: Without dead ends: 38947 [2020-10-14 00:50:08,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:50:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38947 states. [2020-10-14 00:50:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38947 to 38145. [2020-10-14 00:50:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38145 states. [2020-10-14 00:50:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38145 states to 38145 states and 42802 transitions. [2020-10-14 00:50:09,033 INFO L78 Accepts]: Start accepts. Automaton has 38145 states and 42802 transitions. Word has length 390 [2020-10-14 00:50:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:09,034 INFO L479 AbstractCegarLoop]: Abstraction has 38145 states and 42802 transitions. [2020-10-14 00:50:09,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 38145 states and 42802 transitions. [2020-10-14 00:50:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-14 00:50:09,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:09,069 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:09,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:50:09,069 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:09,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1742030055, now seen corresponding path program 1 times [2020-10-14 00:50:09,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:09,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042762355] [2020-10-14 00:50:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:13,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 00:50:13,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4304 [2020-10-14 00:50:13,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:13,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 00:50:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 00:50:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:13,654 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:13,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:13,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:13,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:13,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:13,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:13,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:50:13,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:13,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:13,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:50:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:13,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:13,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 00:50:13,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 00:50:13,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:13,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:13,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:13,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:13,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:50:13,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-14 00:50:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:14,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:14,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:50:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-14 00:50:14,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:14,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:50:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:14,714 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 00:50:14,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042762355] [2020-10-14 00:50:14,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:14,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:14,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015335137] [2020-10-14 00:50:14,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:14,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:14,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:14,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:14,716 INFO L87 Difference]: Start difference. First operand 38145 states and 42802 transitions. Second operand 7 states. [2020-10-14 00:50:15,503 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:50:16,128 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:18,781 INFO L93 Difference]: Finished difference Result 87168 states and 104040 transitions. [2020-10-14 00:50:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:50:18,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-14 00:50:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:18,992 INFO L225 Difference]: With dead ends: 87168 [2020-10-14 00:50:18,993 INFO L226 Difference]: Without dead ends: 57085 [2020-10-14 00:50:19,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:50:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57085 states. [2020-10-14 00:50:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57085 to 54480. [2020-10-14 00:50:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54480 states. [2020-10-14 00:50:20,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54480 states to 54480 states and 60668 transitions. [2020-10-14 00:50:20,022 INFO L78 Accepts]: Start accepts. Automaton has 54480 states and 60668 transitions. Word has length 405 [2020-10-14 00:50:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:20,023 INFO L479 AbstractCegarLoop]: Abstraction has 54480 states and 60668 transitions. [2020-10-14 00:50:20,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:20,023 INFO L276 IsEmpty]: Start isEmpty. Operand 54480 states and 60668 transitions. [2020-10-14 00:50:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-14 00:50:20,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:20,056 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, 5, 5, 5, 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, 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] [2020-10-14 00:50:20,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:50:20,056 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:20,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:20,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1934654042, now seen corresponding path program 1 times [2020-10-14 00:50:20,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:20,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280855334] [2020-10-14 00:50:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:20,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:25,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:25,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-14 00:50:25,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:50:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 00:50:25,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:25,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 00:50:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:50:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:25,297 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:25,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:25,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:25,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:50:25,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:25,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:25,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:25,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:25,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:25,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:50:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:25,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:25,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:25,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:50:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 00:50:25,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:25,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:25,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:50:25,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:25,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:50:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:25,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 00:50:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 00:50:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:25,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:25,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:50:25,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:25,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:50:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:25,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-14 00:50:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:25,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-14 00:50:25,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:25,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 333 proven. 86 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-10-14 00:50:25,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280855334] [2020-10-14 00:50:25,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:25,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:25,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301997497] [2020-10-14 00:50:25,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:25,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:25,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:25,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:25,910 INFO L87 Difference]: Start difference. First operand 54480 states and 60668 transitions. Second operand 7 states. [2020-10-14 00:50:26,511 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:26,890 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:50:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:30,503 INFO L93 Difference]: Finished difference Result 103511 states and 118380 transitions. [2020-10-14 00:50:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:50:30,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-14 00:50:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:30,627 INFO L225 Difference]: With dead ends: 103511 [2020-10-14 00:50:30,627 INFO L226 Difference]: Without dead ends: 56641 [2020-10-14 00:50:30,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:50:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56641 states. [2020-10-14 00:50:31,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56641 to 55146. [2020-10-14 00:50:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55146 states. [2020-10-14 00:50:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55146 states to 55146 states and 61213 transitions. [2020-10-14 00:50:31,973 INFO L78 Accepts]: Start accepts. Automaton has 55146 states and 61213 transitions. Word has length 410 [2020-10-14 00:50:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:31,974 INFO L479 AbstractCegarLoop]: Abstraction has 55146 states and 61213 transitions. [2020-10-14 00:50:31,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 55146 states and 61213 transitions. [2020-10-14 00:50:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-14 00:50:32,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:32,007 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:32,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:50:32,007 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:32,008 INFO L82 PathProgramCache]: Analyzing trace with hash 505955020, now seen corresponding path program 1 times [2020-10-14 00:50:32,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:32,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774920437] [2020-10-14 00:50:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:33,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking...