/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:25:45,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:25:45,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:25:45,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:25:45,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:25:45,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:25:45,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:25:45,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:25:45,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:25:45,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:25:45,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:25:45,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:25:45,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:25:45,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:25:45,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:25:45,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:25:45,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:25:45,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:25:45,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:25:45,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:25:45,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:25:45,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:25:45,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:25:45,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:25:45,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:25:45,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:25:45,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:25:45,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:25:45,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:25:45,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:25:45,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:25:45,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:25:45,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:25:45,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:25:45,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:25:45,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:25:45,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:25:45,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:25:45,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:25:45,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:25:45,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:25:45,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:25:45,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:25:45,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:25:45,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:25:45,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:25:45,793 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:25:45,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:25:45,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:25:45,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:25:45,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:25:45,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:25:45,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:25:45,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:25:45,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:25:45,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:25:45,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:25:45,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:25:45,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:25:45,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:25:45,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:25:45,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:25:45,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:25:45,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:45,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:25:45,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:25:45,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:25:45,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:25:45,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:25:45,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:25:45,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:25:45,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:25:46,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:25:46,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:25:46,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:25:46,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:25:46,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:25:46,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2020-10-13 06:25:46,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae9b0e8a/38e0ffc3ad9d41c78baefd048d0cda4c/FLAG1ad06b233 [2020-10-13 06:25:46,879 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:25:46,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2020-10-13 06:25:46,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae9b0e8a/38e0ffc3ad9d41c78baefd048d0cda4c/FLAG1ad06b233 [2020-10-13 06:25:47,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dae9b0e8a/38e0ffc3ad9d41c78baefd048d0cda4c [2020-10-13 06:25:47,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:25:47,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:25:47,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:47,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:25:47,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:25:47,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:47" (1/1) ... [2020-10-13 06:25:47,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b06afa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:47, skipping insertion in model container [2020-10-13 06:25:47,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:25:47" (1/1) ... [2020-10-13 06:25:47,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:25:47,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:25:48,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:48,056 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:25:48,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:25:48,440 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:25:48,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48 WrapperNode [2020-10-13 06:25:48,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:25:48,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:25:48,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:25:48,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:25:48,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... [2020-10-13 06:25:48,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... [2020-10-13 06:25:48,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... [2020-10-13 06:25:48,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... [2020-10-13 06:25:48,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... [2020-10-13 06:25:48,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... [2020-10-13 06:25:48,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... [2020-10-13 06:25:48,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:25:48,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:25:48,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:25:48,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:25:48,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:25:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:25:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:25:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:25:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:25:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:25:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:25:48,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:25:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:25:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:25:48,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:25:48,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:25:50,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:25:50,801 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:25:50,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:50 BoogieIcfgContainer [2020-10-13 06:25:50,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:25:50,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:25:50,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:25:50,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:25:50,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:25:47" (1/3) ... [2020-10-13 06:25:50,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1066cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:50, skipping insertion in model container [2020-10-13 06:25:50,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:25:48" (2/3) ... [2020-10-13 06:25:50,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1066cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:25:50, skipping insertion in model container [2020-10-13 06:25:50,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:25:50" (3/3) ... [2020-10-13 06:25:50,817 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label53.c [2020-10-13 06:25:50,828 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:25:50,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:25:50,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:25:50,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:25:50,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:25:50,880 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:25:50,880 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:25:50,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:25:50,880 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:25:50,880 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:25:50,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:25:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:25:50,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 06:25:50,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:25:50,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:25:50,928 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:25:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:25:50,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1005692243, now seen corresponding path program 1 times [2020-10-13 06:25:50,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:25:50,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345685309] [2020-10-13 06:25:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:25:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:55,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:55,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 06:25:55,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:25:55,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4283 [2020-10-13 06:25:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:25:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:25:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:25:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 06:25:56,775 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-13 06:25:56,996 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:25:57,453 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-13 06:25:57,650 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-13 06:25:57,827 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-13 06:25:57,984 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-13 06:25:58,180 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-13 06:25:58,455 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:25:58,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:25:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:25:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:25:58,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:25:58,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:25:58,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:25:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:25:58,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:25:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:25:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:25:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:25:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:25:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:25:59,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345685309] [2020-10-13 06:25:59,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:25:59,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:25:59,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282219208] [2020-10-13 06:25:59,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:25:59,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:25:59,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:25:59,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:25:59,131 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:25:59,603 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-13 06:26:00,479 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 190 [2020-10-13 06:26:01,287 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 190 [2020-10-13 06:26:02,318 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 210 [2020-10-13 06:26:03,314 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 207 [2020-10-13 06:26:04,527 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 204 [2020-10-13 06:26:05,814 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 201 [2020-10-13 06:26:08,973 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 244 DAG size of output: 199 [2020-10-13 06:26:10,414 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 244 DAG size of output: 194 [2020-10-13 06:26:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:12,709 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:26:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:26:12,717 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2020-10-13 06:26:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:12,745 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:26:12,746 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:26:12,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:26:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:26:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:26:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:26:12,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:26:12,835 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 200 [2020-10-13 06:26:12,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:12,836 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:26:12,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:26:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:26:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 06:26:12,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:12,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:12,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:26:12,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:12,849 INFO L82 PathProgramCache]: Analyzing trace with hash 768947686, now seen corresponding path program 1 times [2020-10-13 06:26:12,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:12,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310326255] [2020-10-13 06:26:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:13,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:17,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:17,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 06:26:17,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4601 [2020-10-13 06:26:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:26:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:26:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:18,455 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-13 06:26:18,595 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-13 06:26:18,900 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-13 06:26:19,245 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-10-13 06:26:19,441 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-13 06:26:19,620 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-13 06:26:19,770 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-13 06:26:20,028 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:20,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:20,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:26:20,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:20,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:20,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:20,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:26:20,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 06:26:20,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:26:20,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:26:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:20,490 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-13 06:26:20,754 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-10-13 06:26:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:21,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310326255] [2020-10-13 06:26:21,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:21,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:26:21,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930281155] [2020-10-13 06:26:21,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:26:21,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:21,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:26:21,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:26:21,442 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:26:21,713 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 06:26:22,279 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 81 [2020-10-13 06:26:22,603 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-10-13 06:26:22,998 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2020-10-13 06:26:23,643 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 181 [2020-10-13 06:26:24,351 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 201 [2020-10-13 06:26:25,567 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 238 DAG size of output: 198 [2020-10-13 06:26:26,156 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-13 06:26:27,923 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 195 [2020-10-13 06:26:30,844 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 192 [2020-10-13 06:26:34,423 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 189 [2020-10-13 06:26:35,569 WARN L193 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 185 [2020-10-13 06:26:39,701 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 149 [2020-10-13 06:26:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:43,641 INFO L93 Difference]: Finished difference Result 1219 states and 1991 transitions. [2020-10-13 06:26:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 06:26:43,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 211 [2020-10-13 06:26:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:43,652 INFO L225 Difference]: With dead ends: 1219 [2020-10-13 06:26:43,652 INFO L226 Difference]: Without dead ends: 976 [2020-10-13 06:26:43,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-10-13 06:26:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-13 06:26:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 958. [2020-10-13 06:26:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2020-10-13 06:26:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1326 transitions. [2020-10-13 06:26:43,744 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1326 transitions. Word has length 211 [2020-10-13 06:26:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:43,745 INFO L479 AbstractCegarLoop]: Abstraction has 958 states and 1326 transitions. [2020-10-13 06:26:43,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:26:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1326 transitions. [2020-10-13 06:26:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 06:26:43,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:43,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:43,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:26:43,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:43,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:43,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1079193038, now seen corresponding path program 1 times [2020-10-13 06:26:43,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:43,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567149158] [2020-10-13 06:26:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:46,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:46,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-13 06:26:46,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:26:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3121 [2020-10-13 06:26:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:26:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:26:46,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:47,284 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:26:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:47,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:47,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:26:47,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:26:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:26:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:47,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:47,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:47,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:26:47,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 06:26:47,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:26:47,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:47,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567149158] [2020-10-13 06:26:47,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:26:47,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:26:47,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650485379] [2020-10-13 06:26:47,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:26:47,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:47,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:26:47,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:26:47,985 INFO L87 Difference]: Start difference. First operand 958 states and 1326 transitions. Second operand 5 states. [2020-10-13 06:26:48,382 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:26:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:50,610 INFO L93 Difference]: Finished difference Result 1801 states and 2702 transitions. [2020-10-13 06:26:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:26:50,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 06:26:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:50,630 INFO L225 Difference]: With dead ends: 1801 [2020-10-13 06:26:50,631 INFO L226 Difference]: Without dead ends: 948 [2020-10-13 06:26:50,635 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 [2020-10-13 06:26:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-10-13 06:26:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 946. [2020-10-13 06:26:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2020-10-13 06:26:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1247 transitions. [2020-10-13 06:26:50,685 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1247 transitions. Word has length 221 [2020-10-13 06:26:50,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:50,685 INFO L479 AbstractCegarLoop]: Abstraction has 946 states and 1247 transitions. [2020-10-13 06:26:50,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:26:50,686 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1247 transitions. [2020-10-13 06:26:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 06:26:50,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:50,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:50,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:26:50,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:50,692 INFO L82 PathProgramCache]: Analyzing trace with hash -970734358, now seen corresponding path program 1 times [2020-10-13 06:26:50,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:50,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117949307] [2020-10-13 06:26:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:53,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:53,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 06:26:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:26:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3166 [2020-10-13 06:26:53,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:26:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:26:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:26:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:26:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:26:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:26:54,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:26:54,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:26:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:26:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:26:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:54,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:26:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:54,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:26:54,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:26:54,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:26:54,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 06:26:54,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:26:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:26:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:26:54,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:26:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:26:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:26:54,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117949307] [2020-10-13 06:26:54,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:26:54,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 06:26:54,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766604659] [2020-10-13 06:26:54,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:26:54,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:26:54,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:26:54,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:26:54,433 INFO L87 Difference]: Start difference. First operand 946 states and 1247 transitions. Second operand 7 states. [2020-10-13 06:26:54,585 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:26:56,441 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:26:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:26:57,481 INFO L93 Difference]: Finished difference Result 2512 states and 3471 transitions. [2020-10-13 06:26:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:26:57,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-13 06:26:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:26:57,495 INFO L225 Difference]: With dead ends: 2512 [2020-10-13 06:26:57,495 INFO L226 Difference]: Without dead ends: 1675 [2020-10-13 06:26:57,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:26:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2020-10-13 06:26:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1646. [2020-10-13 06:26:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2020-10-13 06:26:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2246 transitions. [2020-10-13 06:26:57,577 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2246 transitions. Word has length 232 [2020-10-13 06:26:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:26:57,577 INFO L479 AbstractCegarLoop]: Abstraction has 1646 states and 2246 transitions. [2020-10-13 06:26:57,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:26:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2246 transitions. [2020-10-13 06:26:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 06:26:57,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:26:57,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:26:57,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:26:57,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:26:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:26:57,586 INFO L82 PathProgramCache]: Analyzing trace with hash 717716515, now seen corresponding path program 1 times [2020-10-13 06:26:57,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:26:57,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241116090] [2020-10-13 06:26:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:26:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:26:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:26:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:01,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:01,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 06:27:01,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:27:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4234 [2020-10-13 06:27:01,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:27:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:27:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 06:27:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,086 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:02,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:27:02,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:27:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:02,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:02,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 06:27:02,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:27:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:27:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:02,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:02,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:27:02,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 06:27:02,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:27:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 06:27:02,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241116090] [2020-10-13 06:27:02,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:02,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:02,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668259191] [2020-10-13 06:27:02,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:27:02,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:02,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:27:02,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:27:02,757 INFO L87 Difference]: Start difference. First operand 1646 states and 2246 transitions. Second operand 8 states. [2020-10-13 06:27:02,974 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:04,043 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:27:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:05,995 INFO L93 Difference]: Finished difference Result 4834 states and 6967 transitions. [2020-10-13 06:27:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:27:05,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-13 06:27:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:06,017 INFO L225 Difference]: With dead ends: 4834 [2020-10-13 06:27:06,017 INFO L226 Difference]: Without dead ends: 3297 [2020-10-13 06:27:06,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:27:06,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2020-10-13 06:27:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 3079. [2020-10-13 06:27:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3079 states. [2020-10-13 06:27:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 4317 transitions. [2020-10-13 06:27:06,140 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 4317 transitions. Word has length 243 [2020-10-13 06:27:06,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:06,140 INFO L479 AbstractCegarLoop]: Abstraction has 3079 states and 4317 transitions. [2020-10-13 06:27:06,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:27:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 4317 transitions. [2020-10-13 06:27:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 06:27:06,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:06,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:06,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:27:06,149 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:06,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:06,150 INFO L82 PathProgramCache]: Analyzing trace with hash -2124800975, now seen corresponding path program 1 times [2020-10-13 06:27:06,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:06,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823919938] [2020-10-13 06:27:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:08,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:09,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:09,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 06:27:09,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3642 [2020-10-13 06:27:09,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:27:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:10,027 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:10,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:10,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:10,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:10,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:27:10,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:10,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:10,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:10,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:10,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 06:27:10,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:10,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:10,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:10,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:27:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:27:10,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:27:10,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:10,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823919938] [2020-10-13 06:27:10,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:10,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:10,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617175006] [2020-10-13 06:27:10,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:10,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:10,408 INFO L87 Difference]: Start difference. First operand 3079 states and 4317 transitions. Second operand 7 states. [2020-10-13 06:27:10,554 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:12,158 INFO L93 Difference]: Finished difference Result 4932 states and 7035 transitions. [2020-10-13 06:27:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:27:12,159 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-13 06:27:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:12,178 INFO L225 Difference]: With dead ends: 4932 [2020-10-13 06:27:12,178 INFO L226 Difference]: Without dead ends: 3048 [2020-10-13 06:27:12,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:27:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2020-10-13 06:27:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3032. [2020-10-13 06:27:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3032 states. [2020-10-13 06:27:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 4142 transitions. [2020-10-13 06:27:12,290 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 4142 transitions. Word has length 252 [2020-10-13 06:27:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:12,290 INFO L479 AbstractCegarLoop]: Abstraction has 3032 states and 4142 transitions. [2020-10-13 06:27:12,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 4142 transitions. [2020-10-13 06:27:12,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 06:27:12,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:12,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:12,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:27:12,299 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:12,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:12,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2139925210, now seen corresponding path program 1 times [2020-10-13 06:27:12,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:12,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988273618] [2020-10-13 06:27:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:17,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 06:27:17,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:27:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 06:27:17,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:17,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:17,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:17,652 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:17,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:17,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:27:17,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:17,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:17,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:17,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:17,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 06:27:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:17,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:17,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:17,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:17,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:17,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:27:17,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:17,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 06:27:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:18,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:18,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:18,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:18,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:27:18,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 06:27:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:18,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 54 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:27:18,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988273618] [2020-10-13 06:27:18,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:18,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:27:18,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197005892] [2020-10-13 06:27:18,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:27:18,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:18,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:27:18,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:27:18,064 INFO L87 Difference]: Start difference. First operand 3032 states and 4142 transitions. Second operand 8 states. [2020-10-13 06:27:18,201 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:27:18,527 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:19,326 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:21,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:21,995 INFO L93 Difference]: Finished difference Result 10918 states and 16262 transitions. [2020-10-13 06:27:21,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 06:27:21,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-13 06:27:21,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:22,045 INFO L225 Difference]: With dead ends: 10918 [2020-10-13 06:27:22,045 INFO L226 Difference]: Without dead ends: 7995 [2020-10-13 06:27:22,063 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 [2020-10-13 06:27:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7995 states. [2020-10-13 06:27:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7995 to 7847. [2020-10-13 06:27:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7847 states. [2020-10-13 06:27:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7847 states to 7847 states and 10018 transitions. [2020-10-13 06:27:22,339 INFO L78 Accepts]: Start accepts. Automaton has 7847 states and 10018 transitions. Word has length 256 [2020-10-13 06:27:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:22,339 INFO L479 AbstractCegarLoop]: Abstraction has 7847 states and 10018 transitions. [2020-10-13 06:27:22,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:27:22,340 INFO L276 IsEmpty]: Start isEmpty. Operand 7847 states and 10018 transitions. [2020-10-13 06:27:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-13 06:27:22,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:22,361 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:22,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:27:22,361 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:22,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:22,362 INFO L82 PathProgramCache]: Analyzing trace with hash -243212534, now seen corresponding path program 1 times [2020-10-13 06:27:22,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:22,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836096007] [2020-10-13 06:27:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:25,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-13 06:27:27,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 06:27:27,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:27,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:27,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:27,629 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:27,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:27,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:27,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:27,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:27,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:27,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:27,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:27,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:27,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:27,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:27:27,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:27,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:27,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:27:27,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:27:27,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:27,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:27:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:27,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 06:27:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:28,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:28,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:28,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 06:27:28,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:27:28,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:28,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 100 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 06:27:28,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836096007] [2020-10-13 06:27:28,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:28,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:27:28,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243237284] [2020-10-13 06:27:28,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:27:28,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:28,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:27:28,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:27:28,118 INFO L87 Difference]: Start difference. First operand 7847 states and 10018 transitions. Second operand 8 states. [2020-10-13 06:27:28,504 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:29,339 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:27:29,591 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:33,352 INFO L93 Difference]: Finished difference Result 21658 states and 27400 transitions. [2020-10-13 06:27:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:27:33,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 294 [2020-10-13 06:27:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:33,427 INFO L225 Difference]: With dead ends: 21658 [2020-10-13 06:27:33,427 INFO L226 Difference]: Without dead ends: 13776 [2020-10-13 06:27:33,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:27:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13776 states. [2020-10-13 06:27:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13776 to 13512. [2020-10-13 06:27:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13512 states. [2020-10-13 06:27:33,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13512 states to 13512 states and 16608 transitions. [2020-10-13 06:27:33,858 INFO L78 Accepts]: Start accepts. Automaton has 13512 states and 16608 transitions. Word has length 294 [2020-10-13 06:27:33,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:33,859 INFO L479 AbstractCegarLoop]: Abstraction has 13512 states and 16608 transitions. [2020-10-13 06:27:33,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:27:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 13512 states and 16608 transitions. [2020-10-13 06:27:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 06:27:33,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:33,885 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:33,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:27:33,885 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:33,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:33,886 INFO L82 PathProgramCache]: Analyzing trace with hash 321680850, now seen corresponding path program 1 times [2020-10-13 06:27:33,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:33,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538654270] [2020-10-13 06:27:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:38,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 06:27:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:27:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 06:27:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:27:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:27:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:39,160 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:39,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:39,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:39,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:39,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:39,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:27:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 06:27:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:27:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:39,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:27:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:39,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:39,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:39,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:39,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 06:27:39,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:39,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:27:39,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 06:27:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:39,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:39,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 06:27:39,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 06:27:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 06:27:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 06:27:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:39,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:39,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:39,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:27:39,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:27:39,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:27:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 121 proven. 28 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 06:27:40,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538654270] [2020-10-13 06:27:40,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:40,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:40,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063000302] [2020-10-13 06:27:40,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:40,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:40,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:40,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:40,029 INFO L87 Difference]: Start difference. First operand 13512 states and 16608 transitions. Second operand 7 states. [2020-10-13 06:27:40,527 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:41,269 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:27:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:43,463 INFO L93 Difference]: Finished difference Result 24934 states and 31632 transitions. [2020-10-13 06:27:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:27:43,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-13 06:27:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:43,543 INFO L225 Difference]: With dead ends: 24934 [2020-10-13 06:27:43,543 INFO L226 Difference]: Without dead ends: 16472 [2020-10-13 06:27:43,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:27:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16472 states. [2020-10-13 06:27:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16472 to 16272. [2020-10-13 06:27:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16272 states. [2020-10-13 06:27:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16272 states to 16272 states and 19593 transitions. [2020-10-13 06:27:44,161 INFO L78 Accepts]: Start accepts. Automaton has 16272 states and 19593 transitions. Word has length 312 [2020-10-13 06:27:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:44,162 INFO L479 AbstractCegarLoop]: Abstraction has 16272 states and 19593 transitions. [2020-10-13 06:27:44,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 16272 states and 19593 transitions. [2020-10-13 06:27:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 06:27:44,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:44,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:27:44,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:27:44,208 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:44,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1698806111, now seen corresponding path program 1 times [2020-10-13 06:27:44,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:44,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536907715] [2020-10-13 06:27:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:44,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:44,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:49,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 06:27:49,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:27:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 06:27:49,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:27:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:49,570 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:49,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:49,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:27:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:49,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:27:49,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 06:27:49,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:27:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:27:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:49,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:27:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:27:50,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:27:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:50,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:27:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:27:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:27:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 06:27:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 119 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:27:50,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536907715] [2020-10-13 06:27:50,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:50,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:50,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813312351] [2020-10-13 06:27:50,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:50,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:50,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:50,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:50,110 INFO L87 Difference]: Start difference. First operand 16272 states and 19593 transitions. Second operand 7 states. [2020-10-13 06:27:50,655 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:27:51,443 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:27:53,609 INFO L93 Difference]: Finished difference Result 28104 states and 35463 transitions. [2020-10-13 06:27:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:27:53,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-13 06:27:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:27:53,685 INFO L225 Difference]: With dead ends: 28104 [2020-10-13 06:27:53,685 INFO L226 Difference]: Without dead ends: 19961 [2020-10-13 06:27:53,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:27:53,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19961 states. [2020-10-13 06:27:54,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19961 to 19658. [2020-10-13 06:27:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19658 states. [2020-10-13 06:27:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19658 states to 19658 states and 23525 transitions. [2020-10-13 06:27:54,257 INFO L78 Accepts]: Start accepts. Automaton has 19658 states and 23525 transitions. Word has length 321 [2020-10-13 06:27:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:27:54,258 INFO L479 AbstractCegarLoop]: Abstraction has 19658 states and 23525 transitions. [2020-10-13 06:27:54,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:27:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 19658 states and 23525 transitions. [2020-10-13 06:27:54,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 06:27:54,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:27:54,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:27:54,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:27:54,306 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:27:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:27:54,307 INFO L82 PathProgramCache]: Analyzing trace with hash -108090296, now seen corresponding path program 1 times [2020-10-13 06:27:54,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:27:54,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310291248] [2020-10-13 06:27:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:27:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:57,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:57,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 06:27:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:27:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2877 [2020-10-13 06:27:57,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:27:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:27:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:57,521 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:27:57,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:27:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:57,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:57,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:27:57,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:27:57,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:27:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:27:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:27:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:57,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:57,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:27:57,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:57,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 06:27:57,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:27:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:27:57,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:27:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:27:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:27:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:27:57,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:27:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:27:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:27:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:27:57,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:27:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:27:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:27:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:27:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:27:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:27:57,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310291248] [2020-10-13 06:27:57,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:27:57,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:27:57,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406599452] [2020-10-13 06:27:57,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:27:57,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:27:57,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:27:57,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:27:57,928 INFO L87 Difference]: Start difference. First operand 19658 states and 23525 transitions. Second operand 7 states. [2020-10-13 06:27:58,061 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:27:59,223 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:00,860 INFO L93 Difference]: Finished difference Result 46315 states and 56782 transitions. [2020-10-13 06:28:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:28:00,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-13 06:28:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:00,965 INFO L225 Difference]: With dead ends: 46315 [2020-10-13 06:28:00,965 INFO L226 Difference]: Without dead ends: 28076 [2020-10-13 06:28:01,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28076 states. [2020-10-13 06:28:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28076 to 27916. [2020-10-13 06:28:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27916 states. [2020-10-13 06:28:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27916 states to 27916 states and 33474 transitions. [2020-10-13 06:28:01,607 INFO L78 Accepts]: Start accepts. Automaton has 27916 states and 33474 transitions. Word has length 340 [2020-10-13 06:28:01,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:01,608 INFO L479 AbstractCegarLoop]: Abstraction has 27916 states and 33474 transitions. [2020-10-13 06:28:01,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 27916 states and 33474 transitions. [2020-10-13 06:28:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-13 06:28:01,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:01,660 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:01,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:28:01,660 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:01,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2097656127, now seen corresponding path program 1 times [2020-10-13 06:28:01,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:01,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912999777] [2020-10-13 06:28:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:05,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:06,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:06,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-13 06:28:06,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 06:28:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 06:28:06,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-13 06:28:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:28:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,051 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:07,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:28:07,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:07,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:28:07,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:07,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:28:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:07,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:28:07,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:28:07,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:28:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 06:28:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:07,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:07,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:07,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:28:07,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:28:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-13 06:28:07,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912999777] [2020-10-13 06:28:07,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:07,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:07,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222920437] [2020-10-13 06:28:07,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:07,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:07,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:07,554 INFO L87 Difference]: Start difference. First operand 27916 states and 33474 transitions. Second operand 7 states. [2020-10-13 06:28:07,782 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:08,128 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:11,625 INFO L93 Difference]: Finished difference Result 69775 states and 87733 transitions. [2020-10-13 06:28:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:11,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-13 06:28:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:11,816 INFO L225 Difference]: With dead ends: 69775 [2020-10-13 06:28:11,816 INFO L226 Difference]: Without dead ends: 42840 [2020-10-13 06:28:11,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:11,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42840 states. [2020-10-13 06:28:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42840 to 41939. [2020-10-13 06:28:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41939 states. [2020-10-13 06:28:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41939 states to 41939 states and 49732 transitions. [2020-10-13 06:28:13,149 INFO L78 Accepts]: Start accepts. Automaton has 41939 states and 49732 transitions. Word has length 345 [2020-10-13 06:28:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:13,149 INFO L479 AbstractCegarLoop]: Abstraction has 41939 states and 49732 transitions. [2020-10-13 06:28:13,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 41939 states and 49732 transitions. [2020-10-13 06:28:13,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-13 06:28:13,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:13,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:13,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:28:13,200 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:13,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:13,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1705675840, now seen corresponding path program 1 times [2020-10-13 06:28:13,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:13,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663684662] [2020-10-13 06:28:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:13,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:17,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3695 [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-13 06:28:17,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:17,246 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:17,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:17,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:17,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:17,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:17,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:28:17,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:28:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:17,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:17,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:17,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:28:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-13 06:28:17,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:17,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 06:28:17,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:28:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:18,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:28:18,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:18,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 06:28:18,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:28:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:28:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 139 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 06:28:18,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663684662] [2020-10-13 06:28:18,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:18,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:18,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701002357] [2020-10-13 06:28:18,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:28:18,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:18,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:28:18,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:28:18,657 INFO L87 Difference]: Start difference. First operand 41939 states and 49732 transitions. Second operand 8 states. [2020-10-13 06:28:18,802 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:28:19,774 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:28:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:21,694 INFO L93 Difference]: Finished difference Result 99609 states and 117189 transitions. [2020-10-13 06:28:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:28:21,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 344 [2020-10-13 06:28:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:21,899 INFO L225 Difference]: With dead ends: 99609 [2020-10-13 06:28:21,899 INFO L226 Difference]: Without dead ends: 61251 [2020-10-13 06:28:21,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:28:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61251 states. [2020-10-13 06:28:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61251 to 60895. [2020-10-13 06:28:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60895 states. [2020-10-13 06:28:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60895 states to 60895 states and 70693 transitions. [2020-10-13 06:28:23,540 INFO L78 Accepts]: Start accepts. Automaton has 60895 states and 70693 transitions. Word has length 344 [2020-10-13 06:28:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:23,540 INFO L479 AbstractCegarLoop]: Abstraction has 60895 states and 70693 transitions. [2020-10-13 06:28:23,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:28:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 60895 states and 70693 transitions. [2020-10-13 06:28:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-13 06:28:23,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:23,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:23,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:28:23,593 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:23,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:23,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2042666055, now seen corresponding path program 1 times [2020-10-13 06:28:23,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:23,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358196916] [2020-10-13 06:28:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 06:28:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:28:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 06:28:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:28:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 06:28:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:28,913 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:28,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:28,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:28,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:28,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:28,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:28,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:29,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:29,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:29,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:28:29,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:28:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:28:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:29,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:28:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:29,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:29,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:29,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:28:29,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:29,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 06:28:29,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:29,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:29,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:28:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:28:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:29,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:29,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:29,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:28:29,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 06:28:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:29,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 179 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:28:29,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358196916] [2020-10-13 06:28:29,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:29,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:29,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858952793] [2020-10-13 06:28:29,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:29,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:29,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:29,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:29,329 INFO L87 Difference]: Start difference. First operand 60895 states and 70693 transitions. Second operand 7 states. [2020-10-13 06:28:29,660 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:30,337 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:28:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:33,946 INFO L93 Difference]: Finished difference Result 124750 states and 147233 transitions. [2020-10-13 06:28:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:33,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-13 06:28:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:34,122 INFO L225 Difference]: With dead ends: 124750 [2020-10-13 06:28:34,123 INFO L226 Difference]: Without dead ends: 76132 [2020-10-13 06:28:34,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76132 states. [2020-10-13 06:28:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76132 to 75883. [2020-10-13 06:28:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75883 states. [2020-10-13 06:28:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75883 states to 75883 states and 89405 transitions. [2020-10-13 06:28:35,800 INFO L78 Accepts]: Start accepts. Automaton has 75883 states and 89405 transitions. Word has length 349 [2020-10-13 06:28:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:35,801 INFO L479 AbstractCegarLoop]: Abstraction has 75883 states and 89405 transitions. [2020-10-13 06:28:35,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 75883 states and 89405 transitions. [2020-10-13 06:28:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-13 06:28:35,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:35,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:35,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:28:35,881 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:35,882 INFO L82 PathProgramCache]: Analyzing trace with hash -756584384, now seen corresponding path program 1 times [2020-10-13 06:28:35,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:35,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704764102] [2020-10-13 06:28:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:36,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:41,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:41,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-13 06:28:41,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:28:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:28:41,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:28:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 06:28:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:41,324 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:41,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:41,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:41,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:41,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:41,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:28:41,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:41,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:41,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:41,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:41,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:28:41,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 06:28:41,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:28:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 06:28:41,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704764102] [2020-10-13 06:28:41,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:41,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:28:41,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890298400] [2020-10-13 06:28:41,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:28:41,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:41,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:28:41,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:28:41,719 INFO L87 Difference]: Start difference. First operand 75883 states and 89405 transitions. Second operand 5 states. [2020-10-13 06:28:41,997 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:28:44,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:44,503 INFO L93 Difference]: Finished difference Result 133234 states and 157372 transitions. [2020-10-13 06:28:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:28:44,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 355 [2020-10-13 06:28:44,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:44,659 INFO L225 Difference]: With dead ends: 133234 [2020-10-13 06:28:44,659 INFO L226 Difference]: Without dead ends: 58144 [2020-10-13 06:28:44,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:28:44,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58144 states. [2020-10-13 06:28:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58144 to 58019. [2020-10-13 06:28:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58019 states. [2020-10-13 06:28:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58019 states to 58019 states and 66678 transitions. [2020-10-13 06:28:45,778 INFO L78 Accepts]: Start accepts. Automaton has 58019 states and 66678 transitions. Word has length 355 [2020-10-13 06:28:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:45,780 INFO L479 AbstractCegarLoop]: Abstraction has 58019 states and 66678 transitions. [2020-10-13 06:28:45,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:28:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 58019 states and 66678 transitions. [2020-10-13 06:28:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-13 06:28:45,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:45,842 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:28:45,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:28:45,843 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:45,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1239437591, now seen corresponding path program 1 times [2020-10-13 06:28:45,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:45,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464276717] [2020-10-13 06:28:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:46,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:46,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:47,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:50,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:50,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-13 06:28:50,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:28:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 06:28:50,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:28:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:51,173 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:28:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:28:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:51,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:51,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:28:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:28:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:28:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:28:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:51,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:28:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:51,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:28:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:28:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:51,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:28:51,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:28:51,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:28:51,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:28:51,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:28:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:28:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:28:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:28:51,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:28:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:28:51,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464276717] [2020-10-13 06:28:51,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:28:51,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:28:51,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862435999] [2020-10-13 06:28:51,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:28:51,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:28:51,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:28:51,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:28:51,630 INFO L87 Difference]: Start difference. First operand 58019 states and 66678 transitions. Second operand 7 states. [2020-10-13 06:28:52,300 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:28:52,501 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:28:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:28:56,089 INFO L93 Difference]: Finished difference Result 123260 states and 142071 transitions. [2020-10-13 06:28:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:28:56,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-13 06:28:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:28:56,202 INFO L225 Difference]: With dead ends: 123260 [2020-10-13 06:28:56,203 INFO L226 Difference]: Without dead ends: 65354 [2020-10-13 06:28:56,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:28:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65354 states. [2020-10-13 06:28:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65354 to 64822. [2020-10-13 06:28:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64822 states. [2020-10-13 06:28:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64822 states to 64822 states and 73865 transitions. [2020-10-13 06:28:57,296 INFO L78 Accepts]: Start accepts. Automaton has 64822 states and 73865 transitions. Word has length 365 [2020-10-13 06:28:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:28:57,296 INFO L479 AbstractCegarLoop]: Abstraction has 64822 states and 73865 transitions. [2020-10-13 06:28:57,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:28:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 64822 states and 73865 transitions. [2020-10-13 06:28:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-13 06:28:57,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:28:57,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:28:57,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:28:57,352 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:28:57,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:28:57,354 INFO L82 PathProgramCache]: Analyzing trace with hash -743136698, now seen corresponding path program 1 times [2020-10-13 06:28:57,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:28:57,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920542055] [2020-10-13 06:28:57,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:28:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:28:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:28:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:02,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:02,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-13 06:29:02,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:29:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4915 [2020-10-13 06:29:02,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:29:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:29:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:29:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:02,622 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:29:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:29:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:02,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:29:02,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:02,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:29:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:02,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 06:29:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:29:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:29:03,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 06:29:03,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:29:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-13 06:29:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:29:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:29:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:29:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 06:29:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:29:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 168 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 06:29:03,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920542055] [2020-10-13 06:29:03,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:29:03,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:29:03,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400598366] [2020-10-13 06:29:03,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:29:03,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:29:03,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:29:03,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:29:03,737 INFO L87 Difference]: Start difference. First operand 64822 states and 73865 transitions. Second operand 8 states. [2020-10-13 06:29:03,882 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:29:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:29:05,832 INFO L93 Difference]: Finished difference Result 107030 states and 122031 transitions. [2020-10-13 06:29:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:29:05,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 375 [2020-10-13 06:29:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:29:05,956 INFO L225 Difference]: With dead ends: 107030 [2020-10-13 06:29:05,956 INFO L226 Difference]: Without dead ends: 62770 [2020-10-13 06:29:06,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:29:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62770 states. [2020-10-13 06:29:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62770 to 61880. [2020-10-13 06:29:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61880 states. [2020-10-13 06:29:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61880 states to 61880 states and 70346 transitions. [2020-10-13 06:29:06,798 INFO L78 Accepts]: Start accepts. Automaton has 61880 states and 70346 transitions. Word has length 375 [2020-10-13 06:29:06,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:29:06,798 INFO L479 AbstractCegarLoop]: Abstraction has 61880 states and 70346 transitions. [2020-10-13 06:29:06,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:29:06,798 INFO L276 IsEmpty]: Start isEmpty. Operand 61880 states and 70346 transitions. [2020-10-13 06:29:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-13 06:29:06,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:29:06,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:29:06,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:29:06,839 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:29:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:29:06,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1833793495, now seen corresponding path program 1 times [2020-10-13 06:29:06,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:29:06,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789118699] [2020-10-13 06:29:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:29:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:29:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:29:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking...