/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:15:24,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:15:24,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:15:24,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:15:24,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:15:24,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:15:24,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:15:24,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:15:24,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:15:24,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:15:24,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:15:24,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:15:24,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:15:24,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:15:24,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:15:24,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:15:24,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:15:24,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:15:24,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:15:24,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:15:24,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:15:24,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:15:24,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:15:24,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:15:24,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:15:24,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:15:24,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:15:24,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:15:24,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:15:24,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:15:24,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:15:24,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:15:24,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:15:24,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:15:24,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:15:24,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:15:24,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:15:24,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:15:24,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:15:24,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:15:24,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:15:24,782 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 19:15:24,820 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:15:24,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:15:24,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:15:24,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:15:24,824 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:15:24,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:15:24,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:15:24,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:15:24,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:15:24,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:15:24,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:15:24,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:15:24,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:15:24,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:15:24,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:15:24,827 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:15:24,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:15:24,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:15:24,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:15:24,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:15:24,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:15:24,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:15:24,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:15:24,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:15:24,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:15:24,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:15:24,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:15:24,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:15:24,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:15:24,832 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:15:25,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:15:25,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:15:25,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:15:25,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:15:25,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:15:25,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-14 19:15:25,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a30d4740/1e3cb47ef0f349f0951e845700845293/FLAGa8ada953f [2020-10-14 19:15:25,842 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:15:25,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label43.c [2020-10-14 19:15:25,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a30d4740/1e3cb47ef0f349f0951e845700845293/FLAGa8ada953f [2020-10-14 19:15:26,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a30d4740/1e3cb47ef0f349f0951e845700845293 [2020-10-14 19:15:26,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:15:26,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:15:26,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:15:26,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:15:26,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:15:26,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:15:26" (1/1) ... [2020-10-14 19:15:26,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f284b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:26, skipping insertion in model container [2020-10-14 19:15:26,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:15:26" (1/1) ... [2020-10-14 19:15:26,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:15:26,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:15:26,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:15:26,986 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:15:27,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:15:27,284 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:15:27,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27 WrapperNode [2020-10-14 19:15:27,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:15:27,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:15:27,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:15:27,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:15:27,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (1/1) ... [2020-10-14 19:15:27,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (1/1) ... [2020-10-14 19:15:27,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (1/1) ... [2020-10-14 19:15:27,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (1/1) ... [2020-10-14 19:15:27,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (1/1) ... [2020-10-14 19:15:27,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (1/1) ... [2020-10-14 19:15:27,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (1/1) ... [2020-10-14 19:15:27,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:15:27,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:15:27,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:15:27,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:15:27,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (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 19:15:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:15:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:15:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:15:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:15:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:15:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:15:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:15:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:15:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:15:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:15:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:15:29,573 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:15:29,574 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:15:29,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:15:29 BoogieIcfgContainer [2020-10-14 19:15:29,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:15:29,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:15:29,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:15:29,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:15:29,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:15:26" (1/3) ... [2020-10-14 19:15:29,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11966722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:15:29, skipping insertion in model container [2020-10-14 19:15:29,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:15:27" (2/3) ... [2020-10-14 19:15:29,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11966722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:15:29, skipping insertion in model container [2020-10-14 19:15:29,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:15:29" (3/3) ... [2020-10-14 19:15:29,604 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label43.c [2020-10-14 19:15:29,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:15:29,640 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:15:29,656 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:15:29,702 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:15:29,703 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:15:29,704 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:15:29,704 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:15:29,704 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:15:29,704 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:15:29,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:15:29,705 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:15:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:15:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 19:15:29,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:29,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:29,782 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1933795261, now seen corresponding path program 1 times [2020-10-14 19:15:29,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:29,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730054578] [2020-10-14 19:15:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:34,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:34,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 19:15:34,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:34,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4020 [2020-10-14 19:15:34,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:34,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:34,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:15:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:15:34,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 19:15:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:15:34,605 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:34,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:34,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:34,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:34,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:15:34,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:34,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:15:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:34,715 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 19:15:34,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730054578] [2020-10-14 19:15:34,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:15:34,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:15:34,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41754211] [2020-10-14 19:15:34,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:15:34,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:34,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:15:34,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:15:34,742 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:15:34,935 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:37,479 INFO L93 Difference]: Finished difference Result 893 states and 1554 transitions. [2020-10-14 19:15:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:37,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-14 19:15:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:37,504 INFO L225 Difference]: With dead ends: 893 [2020-10-14 19:15:37,504 INFO L226 Difference]: Without dead ends: 488 [2020-10-14 19:15:37,514 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 19:15:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-14 19:15:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 470. [2020-10-14 19:15:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-14 19:15:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 755 transitions. [2020-10-14 19:15:37,617 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 755 transitions. Word has length 156 [2020-10-14 19:15:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:37,618 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 755 transitions. [2020-10-14 19:15:37,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:15:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 755 transitions. [2020-10-14 19:15:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 19:15:37,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:37,625 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, 1, 1] [2020-10-14 19:15:37,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:15:37,625 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:37,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:37,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2055560806, now seen corresponding path program 1 times [2020-10-14 19:15:37,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:37,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693014013] [2020-10-14 19:15:37,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 19:15:40,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-10-14 19:15:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:15:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 19:15:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:40,872 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:40,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:40,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:40,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:40,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:40,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:15:40,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:40,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:40,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:40,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:40,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:40,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:41,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:41,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:15:41,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:41,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:15:41,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:41,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:15:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:41,060 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 19:15:41,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693014013] [2020-10-14 19:15:41,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:41,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:15:41,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312539831] [2020-10-14 19:15:41,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:15:41,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:41,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:15:41,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:15:41,064 INFO L87 Difference]: Start difference. First operand 470 states and 755 transitions. Second operand 5 states. [2020-10-14 19:15:41,290 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:44,129 INFO L93 Difference]: Finished difference Result 1376 states and 2248 transitions. [2020-10-14 19:15:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:44,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-14 19:15:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:44,141 INFO L225 Difference]: With dead ends: 1376 [2020-10-14 19:15:44,141 INFO L226 Difference]: Without dead ends: 912 [2020-10-14 19:15:44,144 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 19:15:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-10-14 19:15:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 894. [2020-10-14 19:15:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-14 19:15:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1420 transitions. [2020-10-14 19:15:44,198 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1420 transitions. Word has length 165 [2020-10-14 19:15:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:44,199 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1420 transitions. [2020-10-14 19:15:44,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:15:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1420 transitions. [2020-10-14 19:15:44,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 19:15:44,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:44,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:44,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:15:44,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:44,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:44,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1409737428, now seen corresponding path program 1 times [2020-10-14 19:15:44,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:44,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214660675] [2020-10-14 19:15:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:47,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:47,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 19:15:47,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:15:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3001 [2020-10-14 19:15:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:47,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:47,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:15:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:15:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:47,592 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:47,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:47,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:47,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:15:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:47,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:47,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:47,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:47,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:47,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:15:47,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:15:47,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:47,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:47,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:15:47,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:15:47,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214660675] [2020-10-14 19:15:47,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:47,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:15:47,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977886509] [2020-10-14 19:15:47,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:15:47,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:47,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:15:47,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:15:47,773 INFO L87 Difference]: Start difference. First operand 894 states and 1420 transitions. Second operand 5 states. [2020-10-14 19:15:47,938 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:50,778 INFO L93 Difference]: Finished difference Result 2632 states and 4250 transitions. [2020-10-14 19:15:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:50,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-14 19:15:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:50,795 INFO L225 Difference]: With dead ends: 2632 [2020-10-14 19:15:50,795 INFO L226 Difference]: Without dead ends: 1744 [2020-10-14 19:15:50,798 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 19:15:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-10-14 19:15:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1738. [2020-10-14 19:15:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2020-10-14 19:15:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2666 transitions. [2020-10-14 19:15:50,856 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2666 transitions. Word has length 166 [2020-10-14 19:15:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:50,857 INFO L479 AbstractCegarLoop]: Abstraction has 1738 states and 2666 transitions. [2020-10-14 19:15:50,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:15:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2666 transitions. [2020-10-14 19:15:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 19:15:50,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:50,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:50,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:15:50,864 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:50,864 INFO L82 PathProgramCache]: Analyzing trace with hash -359734186, now seen corresponding path program 1 times [2020-10-14 19:15:50,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:50,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160755801] [2020-10-14 19:15:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:51,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:52,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 19:15:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:15:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2506 [2020-10-14 19:15:53,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:53,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:15:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 19:15:53,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:53,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:53,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:53,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:15:53,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:53,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:53,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:53,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:53,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:53,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:53,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:15:53,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:53,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:15:53,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:53,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:15:53,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:15:53,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160755801] [2020-10-14 19:15:53,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:53,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:15:53,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331968713] [2020-10-14 19:15:53,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:15:53,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:53,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:15:53,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:15:53,814 INFO L87 Difference]: Start difference. First operand 1738 states and 2666 transitions. Second operand 5 states. [2020-10-14 19:15:54,100 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:15:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:56,493 INFO L93 Difference]: Finished difference Result 4940 states and 7665 transitions. [2020-10-14 19:15:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:15:56,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-14 19:15:56,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:56,504 INFO L225 Difference]: With dead ends: 4940 [2020-10-14 19:15:56,505 INFO L226 Difference]: Without dead ends: 1741 [2020-10-14 19:15:56,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 19:15:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-14 19:15:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1737. [2020-10-14 19:15:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1737 states. [2020-10-14 19:15:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2664 transitions. [2020-10-14 19:15:56,568 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2664 transitions. Word has length 166 [2020-10-14 19:15:56,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:56,568 INFO L479 AbstractCegarLoop]: Abstraction has 1737 states and 2664 transitions. [2020-10-14 19:15:56,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:15:56,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2664 transitions. [2020-10-14 19:15:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 19:15:56,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:56,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:56,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:15:56,574 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:56,575 INFO L82 PathProgramCache]: Analyzing trace with hash 440187077, now seen corresponding path program 1 times [2020-10-14 19:15:56,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:56,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058063137] [2020-10-14 19:15:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:58,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:58,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 19:15:58,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:15:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1971 [2020-10-14 19:15:58,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:58,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:15:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 19:15:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:58,869 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:58,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:58,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:58,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:58,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:15:58,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:58,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:58,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:58,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:58,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:58,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:59,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:59,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:59,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:15:59,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:59,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:15:59,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:59,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:15:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:15:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:15:59,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058063137] [2020-10-14 19:15:59,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:59,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:15:59,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444158335] [2020-10-14 19:15:59,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:15:59,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:59,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:15:59,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:15:59,143 INFO L87 Difference]: Start difference. First operand 1737 states and 2664 transitions. Second operand 5 states. [2020-10-14 19:15:59,459 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:02,140 INFO L93 Difference]: Finished difference Result 5153 states and 8115 transitions. [2020-10-14 19:16:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:16:02,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 19:16:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:02,173 INFO L225 Difference]: With dead ends: 5153 [2020-10-14 19:16:02,173 INFO L226 Difference]: Without dead ends: 3422 [2020-10-14 19:16:02,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 19:16:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2020-10-14 19:16:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3412. [2020-10-14 19:16:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2020-10-14 19:16:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5172 transitions. [2020-10-14 19:16:02,323 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5172 transitions. Word has length 170 [2020-10-14 19:16:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:02,324 INFO L479 AbstractCegarLoop]: Abstraction has 3412 states and 5172 transitions. [2020-10-14 19:16:02,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:16:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5172 transitions. [2020-10-14 19:16:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 19:16:02,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:02,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:16:02,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:16:02,336 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash 642664422, now seen corresponding path program 1 times [2020-10-14 19:16:02,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:02,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104988202] [2020-10-14 19:16:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:02,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:02,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 19:16:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:03,660 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:16:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:03,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:03,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:03,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:16:03,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:16:03,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:03,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:16:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:16:03,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104988202] [2020-10-14 19:16:03,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:03,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:16:03,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199424119] [2020-10-14 19:16:03,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:16:03,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:03,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:16:03,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:16:03,885 INFO L87 Difference]: Start difference. First operand 3412 states and 5172 transitions. Second operand 5 states. [2020-10-14 19:16:04,022 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:06,866 INFO L93 Difference]: Finished difference Result 9960 states and 15645 transitions. [2020-10-14 19:16:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:16:06,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-14 19:16:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:06,905 INFO L225 Difference]: With dead ends: 9960 [2020-10-14 19:16:06,905 INFO L226 Difference]: Without dead ends: 6554 [2020-10-14 19:16:06,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 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 19:16:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6554 states. [2020-10-14 19:16:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6554 to 6548. [2020-10-14 19:16:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6548 states. [2020-10-14 19:16:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6548 states to 6548 states and 10008 transitions. [2020-10-14 19:16:07,151 INFO L78 Accepts]: Start accepts. Automaton has 6548 states and 10008 transitions. Word has length 175 [2020-10-14 19:16:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:07,151 INFO L479 AbstractCegarLoop]: Abstraction has 6548 states and 10008 transitions. [2020-10-14 19:16:07,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:16:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6548 states and 10008 transitions. [2020-10-14 19:16:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 19:16:07,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:07,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:07,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:16:07,171 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:07,171 INFO L82 PathProgramCache]: Analyzing trace with hash 739572386, now seen corresponding path program 1 times [2020-10-14 19:16:07,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:07,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398015555] [2020-10-14 19:16:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:07,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:08,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:08,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 19:16:08,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-14 19:16:08,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:08,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:16:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:16:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 19:16:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:09,041 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:09,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:09,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:09,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:09,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:16:09,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:09,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:09,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:09,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:16:09,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:09,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 19:16:09,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:09,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:09,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 19:16:09,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 19:16:09,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398015555] [2020-10-14 19:16:09,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:09,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:16:09,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918791059] [2020-10-14 19:16:09,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:16:09,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:09,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:16:09,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:16:09,356 INFO L87 Difference]: Start difference. First operand 6548 states and 10008 transitions. Second operand 6 states. [2020-10-14 19:16:09,485 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:16:09,926 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:12,850 INFO L93 Difference]: Finished difference Result 23156 states and 36933 transitions. [2020-10-14 19:16:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:16:12,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2020-10-14 19:16:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:12,943 INFO L225 Difference]: With dead ends: 23156 [2020-10-14 19:16:12,943 INFO L226 Difference]: Without dead ends: 16614 [2020-10-14 19:16:12,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:16:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16614 states. [2020-10-14 19:16:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16614 to 16596. [2020-10-14 19:16:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16596 states. [2020-10-14 19:16:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16596 states to 16596 states and 26108 transitions. [2020-10-14 19:16:13,609 INFO L78 Accepts]: Start accepts. Automaton has 16596 states and 26108 transitions. Word has length 193 [2020-10-14 19:16:13,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:13,610 INFO L479 AbstractCegarLoop]: Abstraction has 16596 states and 26108 transitions. [2020-10-14 19:16:13,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:16:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 16596 states and 26108 transitions. [2020-10-14 19:16:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 19:16:13,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:13,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:16:13,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:16:13,681 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:13,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:13,682 INFO L82 PathProgramCache]: Analyzing trace with hash 539406336, now seen corresponding path program 1 times [2020-10-14 19:16:13,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:13,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660708365] [2020-10-14 19:16:13,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:14,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:14,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 19:16:14,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:14,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 19:16:14,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:14,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:16:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:16:14,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:16:14,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:14,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:14,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:14,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:14,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:14,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:16:14,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:14,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:14,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:14,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:16:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:15,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:15,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:16:15,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 19:16:15,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:15,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:16:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:16:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:16:15,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660708365] [2020-10-14 19:16:15,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:16:15,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:16:15,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968793880] [2020-10-14 19:16:15,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:15,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:15,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:15,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:15,312 INFO L87 Difference]: Start difference. First operand 16596 states and 26108 transitions. Second operand 7 states. [2020-10-14 19:16:15,822 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:18,400 INFO L93 Difference]: Finished difference Result 33468 states and 55191 transitions. [2020-10-14 19:16:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:16:18,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-14 19:16:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:18,476 INFO L225 Difference]: With dead ends: 33468 [2020-10-14 19:16:18,477 INFO L226 Difference]: Without dead ends: 16878 [2020-10-14 19:16:18,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 19:16:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16878 states. [2020-10-14 19:16:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16878 to 16738. [2020-10-14 19:16:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16738 states. [2020-10-14 19:16:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16738 states to 16738 states and 23591 transitions. [2020-10-14 19:16:19,144 INFO L78 Accepts]: Start accepts. Automaton has 16738 states and 23591 transitions. Word has length 219 [2020-10-14 19:16:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:19,145 INFO L479 AbstractCegarLoop]: Abstraction has 16738 states and 23591 transitions. [2020-10-14 19:16:19,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 16738 states and 23591 transitions. [2020-10-14 19:16:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 19:16:19,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:19,206 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:19,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:16:19,206 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:19,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1049472916, now seen corresponding path program 1 times [2020-10-14 19:16:19,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:19,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383934645] [2020-10-14 19:16:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:23,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:23,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 19:16:23,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:16:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4271 [2020-10-14 19:16:23,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:23,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:16:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 19:16:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:23,698 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:23,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:23,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:23,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:23,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:23,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:23,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:16:23,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 19:16:23,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:23,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:23,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:16:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:16:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:23,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:16:23,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 19:16:23,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:23,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:23,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:16:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 19:16:24,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383934645] [2020-10-14 19:16:24,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:24,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:16:24,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41168113] [2020-10-14 19:16:24,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:16:24,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:24,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:16:24,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:16:24,235 INFO L87 Difference]: Start difference. First operand 16738 states and 23591 transitions. Second operand 8 states. [2020-10-14 19:16:24,386 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:16:24,782 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:16:25,627 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:16:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:28,367 INFO L93 Difference]: Finished difference Result 37615 states and 54089 transitions. [2020-10-14 19:16:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:16:28,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-14 19:16:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:28,440 INFO L225 Difference]: With dead ends: 37615 [2020-10-14 19:16:28,440 INFO L226 Difference]: Without dead ends: 20883 [2020-10-14 19:16:28,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:16:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20883 states. [2020-10-14 19:16:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20883 to 20586. [2020-10-14 19:16:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20586 states. [2020-10-14 19:16:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20586 states to 20586 states and 27621 transitions. [2020-10-14 19:16:29,053 INFO L78 Accepts]: Start accepts. Automaton has 20586 states and 27621 transitions. Word has length 243 [2020-10-14 19:16:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:29,054 INFO L479 AbstractCegarLoop]: Abstraction has 20586 states and 27621 transitions. [2020-10-14 19:16:29,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:16:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 20586 states and 27621 transitions. [2020-10-14 19:16:29,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 19:16:29,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:29,101 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:29,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:16:29,101 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash 137504426, now seen corresponding path program 1 times [2020-10-14 19:16:29,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:29,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126415360] [2020-10-14 19:16:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:29,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:29,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:31,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:31,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 19:16:31,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:16:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2598 [2020-10-14 19:16:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:31,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:16:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:16:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 19:16:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:31,908 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:31,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:31,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:31,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:16:31,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:31,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:31,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:16:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:16:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 19:16:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:32,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:16:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:16:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:32,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:16:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 19:16:32,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:32,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:16:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 80 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:16:32,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126415360] [2020-10-14 19:16:32,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:32,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:32,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302758606] [2020-10-14 19:16:32,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:16:32,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:32,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:16:32,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:16:32,560 INFO L87 Difference]: Start difference. First operand 20586 states and 27621 transitions. Second operand 8 states. [2020-10-14 19:16:32,709 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:34,014 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:16:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:36,012 INFO L93 Difference]: Finished difference Result 49312 states and 66916 transitions. [2020-10-14 19:16:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:16:36,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-14 19:16:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:36,117 INFO L225 Difference]: With dead ends: 49312 [2020-10-14 19:16:36,117 INFO L226 Difference]: Without dead ends: 28732 [2020-10-14 19:16:36,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:16:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28732 states. [2020-10-14 19:16:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28732 to 28610. [2020-10-14 19:16:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28610 states. [2020-10-14 19:16:36,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28610 states to 28610 states and 37949 transitions. [2020-10-14 19:16:36,762 INFO L78 Accepts]: Start accepts. Automaton has 28610 states and 37949 transitions. Word has length 243 [2020-10-14 19:16:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:36,763 INFO L479 AbstractCegarLoop]: Abstraction has 28610 states and 37949 transitions. [2020-10-14 19:16:36,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:16:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 28610 states and 37949 transitions. [2020-10-14 19:16:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 19:16:36,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:36,796 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:36,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:16:36,797 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash -956227620, now seen corresponding path program 1 times [2020-10-14 19:16:36,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:36,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341459818] [2020-10-14 19:16:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:36,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:39,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:41,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:41,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 19:16:41,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:41,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-14 19:16:41,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:41,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 19:16:41,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 19:16:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:42,109 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:42,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:42,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:16:42,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:42,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:42,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:42,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:42,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:16:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:16:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:42,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:16:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:42,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 19:16:42,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 19:16:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:42,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 19:16:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:42,369 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 19:16:42,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341459818] [2020-10-14 19:16:42,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:42,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:16:42,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529082685] [2020-10-14 19:16:42,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:16:42,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:42,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:16:42,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:16:42,372 INFO L87 Difference]: Start difference. First operand 28610 states and 37949 transitions. Second operand 5 states. [2020-10-14 19:16:42,588 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:16:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:45,124 INFO L93 Difference]: Finished difference Result 62262 states and 82355 transitions. [2020-10-14 19:16:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:16:45,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-14 19:16:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:45,236 INFO L225 Difference]: With dead ends: 62262 [2020-10-14 19:16:45,236 INFO L226 Difference]: Without dead ends: 35543 [2020-10-14 19:16:45,280 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 19:16:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35543 states. [2020-10-14 19:16:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35543 to 34661. [2020-10-14 19:16:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34661 states. [2020-10-14 19:16:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34661 states to 34661 states and 45494 transitions. [2020-10-14 19:16:47,224 INFO L78 Accepts]: Start accepts. Automaton has 34661 states and 45494 transitions. Word has length 251 [2020-10-14 19:16:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:47,225 INFO L479 AbstractCegarLoop]: Abstraction has 34661 states and 45494 transitions. [2020-10-14 19:16:47,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:16:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 34661 states and 45494 transitions. [2020-10-14 19:16:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 19:16:47,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:47,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:47,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:16:47,264 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash 323276851, now seen corresponding path program 1 times [2020-10-14 19:16:47,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:47,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779862826] [2020-10-14 19:16:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:52,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:52,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 19:16:52,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:16:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 19:16:52,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:52,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 19:16:52,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 19:16:52,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:52,473 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:16:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:16:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:52,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:52,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:52,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:16:52,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:52,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:16:52,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:52,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:52,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:52,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:16:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:52,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:52,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:16:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:16:52,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:52,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:16:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:52,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:16:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:52,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:16:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:52,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:52,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:52,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:16:52,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:16:52,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:52,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:16:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:16:52,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:16:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 52 [2020-10-14 19:16:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 19:16:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:52,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:16:52,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:16:52,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:16:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 19:16:52,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:16:52,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:16:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:16:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:16:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:16:52,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:16:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:16:53,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779862826] [2020-10-14 19:16:53,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:16:53,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:16:53,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636267509] [2020-10-14 19:16:53,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:16:53,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:16:53,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:16:53,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:16:53,022 INFO L87 Difference]: Start difference. First operand 34661 states and 45494 transitions. Second operand 7 states. [2020-10-14 19:16:53,279 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 19:16:53,475 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:16:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:16:57,409 INFO L93 Difference]: Finished difference Result 72949 states and 101397 transitions. [2020-10-14 19:16:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:16:57,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-14 19:16:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:16:57,577 INFO L225 Difference]: With dead ends: 72949 [2020-10-14 19:16:57,578 INFO L226 Difference]: Without dead ends: 40179 [2020-10-14 19:16:57,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:16:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40179 states. [2020-10-14 19:16:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40179 to 38485. [2020-10-14 19:16:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38485 states. [2020-10-14 19:16:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38485 states to 38485 states and 50088 transitions. [2020-10-14 19:16:58,787 INFO L78 Accepts]: Start accepts. Automaton has 38485 states and 50088 transitions. Word has length 253 [2020-10-14 19:16:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:16:58,787 INFO L479 AbstractCegarLoop]: Abstraction has 38485 states and 50088 transitions. [2020-10-14 19:16:58,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:16:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 38485 states and 50088 transitions. [2020-10-14 19:16:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 19:16:58,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:16:58,835 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, 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] [2020-10-14 19:16:58,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:16:58,835 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:16:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:16:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash -575787095, now seen corresponding path program 1 times [2020-10-14 19:16:58,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:16:58,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588161061] [2020-10-14 19:16:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:16:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:16:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:16:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:00,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:03,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 19:17:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 19:17:03,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:04,031 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:04,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:04,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:04,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:17:04,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:04,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:04,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:04,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:04,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:17:04,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:17:04,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:04,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:17:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:04,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:04,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:17:04,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:04,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:17:04,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:04,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:04,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:04,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:17:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 19:17:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:17:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 19:17:04,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:04,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:17:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 19:17:04,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588161061] [2020-10-14 19:17:04,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:04,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:17:04,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300162229] [2020-10-14 19:17:04,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:17:04,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:04,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:17:04,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:17:04,399 INFO L87 Difference]: Start difference. First operand 38485 states and 50088 transitions. Second operand 8 states. [2020-10-14 19:17:04,748 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:17:05,003 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:17:05,500 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:17:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:11,679 INFO L93 Difference]: Finished difference Result 164468 states and 242164 transitions. [2020-10-14 19:17:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:17:11,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-14 19:17:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:12,236 INFO L225 Difference]: With dead ends: 164468 [2020-10-14 19:17:12,236 INFO L226 Difference]: Without dead ends: 133539 [2020-10-14 19:17:12,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:17:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133539 states. [2020-10-14 19:17:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133539 to 132922. [2020-10-14 19:17:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132922 states. [2020-10-14 19:17:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132922 states to 132922 states and 189944 transitions. [2020-10-14 19:17:17,729 INFO L78 Accepts]: Start accepts. Automaton has 132922 states and 189944 transitions. Word has length 260 [2020-10-14 19:17:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:17,729 INFO L479 AbstractCegarLoop]: Abstraction has 132922 states and 189944 transitions. [2020-10-14 19:17:17,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:17:17,730 INFO L276 IsEmpty]: Start isEmpty. Operand 132922 states and 189944 transitions. [2020-10-14 19:17:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 19:17:17,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:17,922 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-14 19:17:17,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:17:17,922 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2000458915, now seen corresponding path program 1 times [2020-10-14 19:17:17,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:17,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685615220] [2020-10-14 19:17:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:17,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:22,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:23,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 19:17:23,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:17:23,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 19:17:23,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:23,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:17:23,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 19:17:23,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:23,531 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:23,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:23,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:23,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:17:23,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:17:23,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:23,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 19:17:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:23,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:23,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:23,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:23,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 19:17:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:23,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:17:23,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:17:23,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:23,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:23,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:17:23,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:23,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 19:17:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:23,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:23,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:17:23,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 19:17:23,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:23,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:23,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:17:23,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 19:17:23,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685615220] [2020-10-14 19:17:23,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:23,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:17:23,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959790336] [2020-10-14 19:17:23,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:17:23,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:23,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:17:23,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:17:23,894 INFO L87 Difference]: Start difference. First operand 132922 states and 189944 transitions. Second operand 7 states. [2020-10-14 19:17:24,109 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:17:24,676 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:17:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:34,666 INFO L93 Difference]: Finished difference Result 279321 states and 446347 transitions. [2020-10-14 19:17:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:17:34,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 19:17:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:35,608 INFO L225 Difference]: With dead ends: 279321 [2020-10-14 19:17:35,608 INFO L226 Difference]: Without dead ends: 158983 [2020-10-14 19:17:35,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:17:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158983 states. [2020-10-14 19:17:39,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158983 to 147075. [2020-10-14 19:17:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147075 states. [2020-10-14 19:17:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147075 states to 147075 states and 205792 transitions. [2020-10-14 19:17:40,273 INFO L78 Accepts]: Start accepts. Automaton has 147075 states and 205792 transitions. Word has length 263 [2020-10-14 19:17:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:40,273 INFO L479 AbstractCegarLoop]: Abstraction has 147075 states and 205792 transitions. [2020-10-14 19:17:40,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:17:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 147075 states and 205792 transitions. [2020-10-14 19:17:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 19:17:40,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:40,490 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:17:40,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:17:40,491 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:40,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1802571657, now seen corresponding path program 1 times [2020-10-14 19:17:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:40,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343363142] [2020-10-14 19:17:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:40,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:41,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 19:17:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:17:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 19:17:45,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:45,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:17:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 19:17:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 19:17:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:45,747 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:45,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:45,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:45,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:17:45,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:45,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:45,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:45,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:45,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 19:17:45,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:45,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:17:45,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:45,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:45,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 19:17:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:45,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:45,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:45,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:17:45,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:45,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:17:45,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:45,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:45,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:45,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:17:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:45,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 19:17:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:45,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:45,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:17:45,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:17:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 19:17:45,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:45,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:17:45,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:45,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 19:17:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:46,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:17:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:17:46,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:17:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 158 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 19:17:46,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343363142] [2020-10-14 19:17:46,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:46,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:17:46,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874912646] [2020-10-14 19:17:46,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:17:46,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:46,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:17:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:17:46,401 INFO L87 Difference]: Start difference. First operand 147075 states and 205792 transitions. Second operand 9 states. [2020-10-14 19:17:46,556 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:17:46,989 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:17:49,273 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:17:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:54,739 INFO L93 Difference]: Finished difference Result 377409 states and 532922 transitions. [2020-10-14 19:17:54,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:17:54,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 268 [2020-10-14 19:17:54,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:55,618 INFO L225 Difference]: With dead ends: 377409 [2020-10-14 19:17:55,618 INFO L226 Difference]: Without dead ends: 234346 [2020-10-14 19:17:55,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:18:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234346 states. [2020-10-14 19:18:05,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234346 to 233279. [2020-10-14 19:18:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233279 states. [2020-10-14 19:18:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233279 states to 233279 states and 320503 transitions. [2020-10-14 19:18:05,943 INFO L78 Accepts]: Start accepts. Automaton has 233279 states and 320503 transitions. Word has length 268 [2020-10-14 19:18:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:05,943 INFO L479 AbstractCegarLoop]: Abstraction has 233279 states and 320503 transitions. [2020-10-14 19:18:05,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:18:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 233279 states and 320503 transitions. [2020-10-14 19:18:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 19:18:06,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:06,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:18:06,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:18:06,253 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:06,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1057777587, now seen corresponding path program 1 times [2020-10-14 19:18:06,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:06,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856030852] [2020-10-14 19:18:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:07,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:11,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:11,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 19:18:11,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:18:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-14 19:18:11,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:11,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:18:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 19:18:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 19:18:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:11,628 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:11,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:11,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:11,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:18:11,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:11,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:11,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:11,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:18:11,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:11,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 19:18:11,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:11,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:11,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:18:11,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:18:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:11,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 19:18:11,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 19:18:11,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:11,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:18:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:11,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 19:18:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:12,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:12,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 19:18:12,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 19:18:12,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:12,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:18:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 19:18:12,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856030852] [2020-10-14 19:18:12,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:12,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:18:12,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220084313] [2020-10-14 19:18:12,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:18:12,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:12,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:18:12,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:18:12,309 INFO L87 Difference]: Start difference. First operand 233279 states and 320503 transitions. Second operand 7 states. [2020-10-14 19:18:12,638 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:18:14,304 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:18:22,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:22,297 INFO L93 Difference]: Finished difference Result 513127 states and 733634 transitions. [2020-10-14 19:18:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:18:22,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 19:18:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:23,754 INFO L225 Difference]: With dead ends: 513127 [2020-10-14 19:18:23,755 INFO L226 Difference]: Without dead ends: 285712 [2020-10-14 19:18:24,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:18:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285712 states. [2020-10-14 19:18:35,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285712 to 279696. [2020-10-14 19:18:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279696 states. [2020-10-14 19:18:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279696 states to 279696 states and 384608 transitions. [2020-10-14 19:18:36,048 INFO L78 Accepts]: Start accepts. Automaton has 279696 states and 384608 transitions. Word has length 275 [2020-10-14 19:18:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:36,048 INFO L479 AbstractCegarLoop]: Abstraction has 279696 states and 384608 transitions. [2020-10-14 19:18:36,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:18:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 279696 states and 384608 transitions. [2020-10-14 19:18:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-14 19:18:36,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:36,702 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:36,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:18:36,703 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash 4631671, now seen corresponding path program 1 times [2020-10-14 19:18:36,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:36,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537545939] [2020-10-14 19:18:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:36,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:40,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:45,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 19:18:45,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:18:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8878 [2020-10-14 19:18:45,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:45,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 19:18:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 19:18:45,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 19:18:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:45,840 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:45,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:45,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:45,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:45,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:45,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:18:45,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:45,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:45,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:45,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:46,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:18:46,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 19:18:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:46,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 19:18:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 19:18:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking...